SCROLL NEWS / DISCOVERY
Search headlines
Find the stories shaping the conversation.
Results for " covered " 1,627 found 🔀 AI-powered Shuffle
Google Health 5.09 arrives with more than just your new Pixel Watch features
Learn about all the changes present in this week's Google Health 5.09 update, arriving for both Android and iOS devices.
Scientists Discovered a New Species in a 309-Million-Year-Old Museum Fossil and Named It After Their Moms
Jeanerpeton was long labeled as another species, highlighting how much ancient amphibian diversity may have gone unnoticed.
The 5 College Football Games to Watch in Week 4
Before diving in, please note that Big Ten games are not included below since they are covered in our weekly Big Ten preview. Clemson at Cal 10:30 p.m., ESPN (Friday) This may not be worth the late-night viewing, but this game could answer two interesting questions — is Dabo Swinney’s time at Clemson coming to […]
New Apple TV 4K Leaked
MacRumors contributor Aaron Perris has uncovered an image file for an unreleased Apple TV 4K, suggesting that a new model will finally be released soon. The image is specifically for an "Apple TV 4K (4th generation)" model. Apple TV 4K (4th generation) image (on a gradient) The image reveals that the Apple TV will have the same external design as the current model, with all of its upgrades expected to be internal.
Scientists discovered two bizarre new sea spiders that are “nightmare fuel”
Scientists discovered two strange new sea spider species in the Salish Sea, including a hairy-legged, red-eyed species that can groom itself with comb-like appendages. Another is frequently covered in tiny parasites, and researchers say many more undiscovered sea spiders may still be hiding in the region.
Falcons – Packers instant recap: Making the Lambeau leap
It started off bad, and after the first two weeks of the season, that led many of us to brace for the worst. Michael Penix Jr. threw an interception, the team allowed a quick scoring drive for the Packers, and trouble seemed to be on the horizon. Then the switch flipped, the Falcons discovered what […]
Glenwood cremation business searched in South Chicago funeral home investigation
A cremation business in Glenwood is now part of a broader investigation connected to the South Chicago funeral home where authorities discovered 56 bodies last month.
Lansing cremation business searched in South Chicago funeral home investigation
A cremation business in Lansing is now part of a broader investigation connected to the South Chicago funeral home where authorities discovered 56 bodies last month.
Archaeologists discover 'tomb of the very highest rank' in 2,700-year-old Etruscan cemetery
Archaeologists have discovered a massive Etruscan burial mound with a vast assortment of grave goods north of Rome.
Scientists spot a new crater on the Moon
Explore the new Moon crater, the largest yet discovered, and its impact on lunar exploration.
Scientists Discovered a Mysterious Force Eating Away at Cars, Bridges, and Monuments
When water slides on a surface, it can pick up an electric charge—and that can have consequences for metals exposed to the elements.
Reports show MD owed millions by providers, local health agencies
The Office of Inspector General for Health conducted almost 1,400 audits and investigations over the last four years that found more than $42 million in improper or unrecovered payments — they only recently were made public.
Scientists find two tiny new snails with shells that close like doors
Scientists discovered two tiny new snail species in Montenegro, showing that even Europe still holds animals unknown to science. One lives in the threatened Komarnica Canyon, where a proposed hydropower reservoir could destroy habitat before its full biodiversity is understood.
Valley fever spreading to Central Valley cities, linked to oil drilling
Researchers at UC Berkeley have discovered valley fever spores in cities in the Central Valley and linked nearby oil drilling to an uptick in infection risk — challenging the long-held belief that the deadly disease only affects rural areas.
What's new to streaming this week? (Sept. 25, 2026)
What’s new on Netflix, Prime Video, Paramount+, and more? We've got you covered.
Hands-on science can be cool
After spending many long days conducting experiments to find a new way to combat bacterial infections in crops, Misha Hegde and Mia Soleil Maurer have been rewarded with international recognition and access to top research facilities. But these are not typical scientists. They are 16-year-old German high school students.“Our supervisor told us that in order to start a project, you need to begin with either a question or a problem,” says Misha, adding that she and Mia had read about antibiotic resistance in certain plants being treated for bacterial infections. “We found out that antibiotics overuse is very common in agriculture,” explains Mia. “Our aim was to create an alternative to antibiotics and to try to raise awareness of the problem of overusing antibiotics.”Their subsequent research has focused on harnessing bacteriophages, the natural predators of bacteria, to eliminate pathogens threatening food crops treated with antibiotics. At the Schuldorf Bergstraße Jugend forscht MakerLab in Seeheim-Jugenheim, located in the German state of Hesse, they discovered a novel phage that infects the Rhizobium rhizogenes bacterium, which causes the hairy root disease that can reduce yields of tomatoes, carrots, soya beans and other food staples.The students believe their method could curb antibiotic use, while protecting plants from infections without disturbing the natural soil microbiome. “The application of phages is host-specific, so they would only kill the targeted pathogen or disease-causing bacteria,” explains Mia. It may also offer environmental benefits, since applying antibiotics can contaminate groundwater.Getting to this point has not been easy. The childhood friends admit to feeling frustrated when their trials did not yield the expected results. “We spent six months on our first experiment, just doing the same thing over and over and over again, to the point where we thought, is it even worth it? Why are we doing this?” Misha says. “You just need to be brave enough to take that first step and keep going.”The benefits of inquiry-based learningTheir determination has paid off. In 2025, the pair won first prize in biology at Jugend forscht, Germany’s national competition for young people interested in science, technology, engineering and mathematics. They were also among the winners of the German Research Foundation Europa-Preis, which is awarded to selected national winners at Jugend forscht, and took third place in the 2025 European Union Contest for Young Scientists.The Jugend forscht Foundation opens doors for young people to connect with scientists as well as industry professionals. Jessica Bönsch, executive director of the Foundation, sees Misha and Mia as prime examples of how young people can develop a deeper understanding of science through their own research projects. “The experience of working on your own research question is very important,” she explains, adding that “inquiry-based learning engages with real-life problems in a way that can be more motivating than traditional classroom teaching.”The Jugend forscht Foundation offers financial support through sponsor pools in Germany’s federal states. Some projects are developed in cooperation with student research centres, university labs or informal collaborative learning areas called makerspaces. Other activities start as hands-on “garage projects” and can grow within the Jugend forscht network and infrastructure.The Jugend forscht Foundation is also a partner of Science Comes to Town, an EU initiative to strengthen public awareness about science and create bridges between researchers and communities. The EU-financed project involves universities, research institutions and other stakeholders in three host cities — Brest (France), Kiel (Germany) and Split (Croatia).“It's so important for people not to live in a bubble, because I think science can be very scary if you misunderstand it,” Mia says of SCTT. The initiative’s aim of raising awareness about science is “absolutely amazing,” Misha adds. “I think it's the best way to kind of make science digestible for the public. In a world where misinformation in science is getting more radical, more dangerous, becoming more of a threat to the trust in scientific infrastructure and foundations, we need such programmes.”Misha and Mia also believe that SCTT can help break down gender stereotypes in science by encouraging young women to study and pursue careers in scientific fields. Both students have benefited from female mentors and encouragement they had when they were much younger. Mia’s love of science began with a class trip to a lab, while Misha — with a smile on her face — says she wanted to study history until “a teacher kind of coerced me into joining a school science club.”Recognition beyond EuropeIn May, Misha and Mia were among the finalists at the Regeneron International Science and Engineering Fair held in Phoenix, Arizona, and involving nearly 1,700 pre-university students from over 60 countries. “It was very crazy because there were so many people and so many teenagers interested in science,” Mia recalls. The event was also challenging. “It was eight hours of continuously presenting your project,” adds Misha.Attending the fair was a chance for the young women to see first-hand the value of international collaboration as well as how research cultures differ. “America is a bit more willing to take risks, and I think that's something we can learn about here in Europe,” Misha explains. However, she continues, “I think Europe has the talent, has the innovation and has the resources” to be competitive.Misha and Mia plan to continue their phage experiments in the new school year, inspired by the project’s hands-on nature and the support they receive from their supervisors. They have also attracted the interest of professional scientists and received invitations to leading research facilities, including the Centre for Synthetic Microbiology, jointly run by the University of Marburg and the Max Planck Institute for Terrestrial Microbiology in Germany. “It is so cool that we can do something to try to move the world in our school and at this age,” Mia says.After completing secondary school, Mia plans to study microbiology and pursue a career in medical research, focusing on Ebola and other infectious diseases. “This has been my dream for so long,” she says. Her friend Misha is interested in biological research with a focus on medicine. “I've gotten addicted to the process of going to the lab, planning out experiments, then failing, trying again,” Misha says. “I think there's just so much to be discovered, so much to be done.”The students' names and photos were published with the permission of their parents.Science|Business, which connects policymakers, academics and industry through its news reporting, analysis and events, is an SCTT partner.
iOS 27.0.1 is Coming Soon
After releasing iOS 27 last week, Apple is already testing a follow-up iOS 27.0.1 update for iPhones, according to MacRumors logs. iOS 27.0.1 will likely be a minor update with bug fixes and/or security patches. Shortly after Apple launches new iPhone models, some software bugs are usually discovered as the devices get into the hands of millions of customers around the world.
Sea spider with hairy feet, three lips, and red eyes found in Canada
The team also found a new species covered in parasites.
First T. rex trackway discovered in North Dakota by high school science teacher
A science instructor discovered the first known T. rex trackway in North Dakota’s Hell Creek Formation, offering rare clues about how the dinosaur walked.
China Capital stories reveal how ICBC advanced China’s political goals across four continents
ICIJ’s media partners uncovered strategic deals and moves the Chinese bank made around the world to further the political priorities of the party-state.
Missouri Consumers Could See Health Insurance Premiums Rise by as Much As 26% In 2027
Missourians who buy their own health insurance and many people covered through small-business plans could see premiums increase between 10% and 26% in 2027. Preliminary rate filings submitted to the Missouri Department of Commerce and Insurance show higher costs may be on the way for consumers. Missouri Department of Commerce and Insurance Director Angie Nelson […]
Meet the hairy-legged, red-eyed sea spiders new to science
Two new sea spider species have been discovered in the Salish Sea by UBC researchers - the first described there in almost 100 years.
Maryland health inspector general audits find $42M in improper payments, report says
Maryland’s Office of Inspector General for Health (OIGH) has identified more than $42 million in improper or unrecovered payments over the last four years, acco
Hayden Panettiere death investigation reveals drugs found with star: Report
Blue pressed pills that tested positive for fentanyl were discovered near Hayden Panettiere following her fatal overdose, according to a newly released investigative report.
Scientists Discovered an Inexplicable New Kind of Ice. It Gets Hot Enough to Melt Steel.
There are dozens of types of exotic ice, but this one could help solve an outstanding astrophysics mystery in the outer solar system.
Column: Dolly Parton transcended politics by putting humanity first
Americans don’t agree on much these days. Dolly Parton was the rare exception. Country bumpkins and city drag queens. God-fearing Christians and queer people. Conservatives and progressives. Younger fans who discovered her decades after her rise to fame and generations who grew up alongside her. Parton’s reach was seemingly boundless, her audience a study in...
Newly available reports show state owed millions by providers, local health agencies
The Office of Inspector General for Health did almost 1,400 audits and investigations over the last four years and found more than $42 million in improper or unrecovered payments -- but those reports have only recently been posted for public review.
Scientists Just Found Something Unexpected in the Pages of Medieval Books
Scientists recovered sheep pox DNA from medieval parchment, helping trace a devastating livestock disease back more than 3,700 years.
NASA-Funded Research Finds Complex Life Defying Record Heat
NASA-supported scientists have discovered an organism that lives at extreme temperatures previously thought impossible for complex life. High temperatures can
In a concrete-covered culture, John Wilson carves out a micro-movie revolution
In a blockbuster movie world, John Wilson is carving out an idiosyncratic niche of his own | WBBM Newsradio 780 AM & 105.9 FM
Broncos Survey: Which Rams player concerns you the most?
The Denver Broncos have a tough matchup ahead of them in Week 3 when the host the Los Angeles Rams on Sunday Night Football. They recovered strongly from an ugly prime time game in Week 1 with a strong performance on Sunday against the Jacksonville Jaguars, but the NFL leaves no rest for the weary. […]
Vera Rubin Observatory detects one of the smallest and faintest satellite galaxies ever seen — before the telescope's mission even began
Astronomers looking at Vera C. Rubin Observatory test data have discovered 'Aquarius IV', believed to be a brand new satellite galaxy of the Milky Way located 350,000 light-years away.
Clemson, Georgia Cancel 4-Game Series in Football
Clemson and Georgia have mutually agreed to cancel the upcoming 4 game series between the two schools according to reporting by the Athens Banner-Herald. The news was discovered via an open records request this week, though the agreement was signed back in March. The Tigers and Bulldogs planned to play each other 4 times starting […]
Bryson’s story: Penn State Health delivers coordinated care for Lancaster family
After newborn Bryson Geiss was transferred to Penn State Health Golisano Children’s Hospital for specialized NICU care, he recovered quickly and went home with his family just two days later.
Amateur archaeologist finds Germany’s biggest hoard of ancient Roman silver coins
An amateur archaeologist has discovered a significant hoard of Roman silver coins in western Germany.
Kenner cops arrest man for recording video in business bathroom, fear he recorded other places too
Police say a Kenner business owner was a video voyeur, recording patrons in a bathroom."A victim reported that while using the restroom at the business, she discovered a concealed video camera attached underneath the sink," KPD posted. | WWL
Kenner business owner accused of filming customers with hidden cameras in his bathroom
Police have identified three victims so far and recovered over 500 photos and videos. Here’s more.
Nearly 2,400-year-old school where Aristotle taught Alexander the Great discovered in Greece
A school where Aristotle taught Alexander the Great has been found in northern Greece.
Raspberry Pi Locks Down RAM Upgrades
In a recent video [Jeff Geerling] addresses an issue discovered with the Raspberry Pi firmware, specifically how since around 2024 the firmware locks down what RAM size and even module is supported…
Nimesh Patel on stand-up, Palestine and politics: ‘The way that religion’s been weaponized is ugly’
The comedian went from being discovered by Chris Rock to making Saturday Night Live history. Now his new Netflix special, Buy the Dip, tackles timely topics with optimism
Monkey business: Hundreds line up to shop UT, Roller Rabbit pajama partnership
The line of eager faces stretched nearly a quarter of a mile. Hundreds of customers, some of whom waited almost six hours, patiently anticipated the Roller Rabbit and University of Tennessee collaborative pop-up Monday morning. The two-day event brings a limited edition collection of pajamas designed exclusively for Vols, featuring the brand’s “iconic” monkey-covered pattern...
BU students displaced after health officials condemn Brookline apartment building
A Brookline apartment building housing some Boston University students has been condemned after health inspectors discovered what they say is an active sewage leak and other health and safety violatio...
Access Health CT Revises Open Enrollment Dates For 2027
Access Health CT is Connecticut’s official health insurance marketplace, where residents can shop, compare and enroll in health and dental plans. It is also where eligible customers can get financial help and enroll in low or no-cost insurance through HUSKY Health Programs (Medicaid and the Children’s Health Insurance Program (CHIP)) or the Covered CT Program
This weird real-life exploit is discounting Switch game prices and causing... bananas to sell out?
Gaming is not a cheap hobby in 2026. Needless to say, most gamers are generally happy when they're able to stumble on discounts.Users on Reddit have apparently discovered a bizarre real-life hack that can potentially cut the price ...
Fragment of oldest known peace treaty discovered in Turkey
The Kadesh Peace Treaty was signed by Pharaoh Ramesses II and Hittite King Ḫattušili III around 1259 BCE.
Travel health insurance
Travel health insurance Do you have a friend or relative traveling to the Dominican Republic? Encourage them to get travel health insurance before they depart the U.S. to avoid possible medical emergencies becoming financial emergencies, too. Many travelers ask, “Why would I need travel health insurance–I have health insurance?” But your domestic U.S. health insurance may not work overseas. Hospitals here in the Dominican Republic often require payment in full prior to the patient being treated or being discharged. Some private U.S. insurance companies pay for overseas medical care, but usually only on a reimbursable basis, meaning you must pay first and request reimbursement later. The U.S. government does not pay for medical care overseas, and Medicare does not cover medical or hospital expenses incurred outside the United States. In addition, if the traveler needs to be medically evacuated for any reason, this is not covered by most U.S insurance and usually costs well over $10,000 USD. Travel medical insurance can alleviate this cost burden. Don’t let unexpected medical costs ruin your vacation! Please review more information here on Travel.State.Gov and on the Embassy website’s page on Medical Emergency – U.S. Embassy in the Dominican Republic.
Brighton 3-0 Arsenal
Dawid: Another excellent team performance with the goals being shared around and a clean sheet against arguably the best Premier League team. With the international break upon us, we can expect some of our injured players to have recovered.
Dutch scientists discover tin-based solar breakthrough that keeps hot electrons 1,000 times longer than current panels, changing the future of solar power
Scientists at the University of Groningen in the Netherlands have discovered how tin-based perovskite materials allow hot electrons to retain their excess energy for around 1,000 times longer than expected, a finding that could shape the future of solar power. The researchers found that two physical effects, the hot phonon bottleneck and the Burstein–Moss effect, work together to slow electron cooling from picoseconds to nanoseconds.
Ebola outbreak update: Cases and deaths; Dungu health zone, Haut-Uélé province now affected
A total of 73 new confirmed cases of Ebola Virus Disease (EVD) were reported on September 18, 2026, including 25 community deaths. Of these confirmed cases, 46 were from Ituri province, 18 from North Kivu, 6 from Haut-Uélé, and 3 from Tshopo. A new health zone, Dungu, in Haut-Uélé province, was affected during the day. As this zone borders South Sudan, strengthening cross-border surveillance is necessary. During the day on September 18, 2026, 12 deaths within Ebola Treatment Centers (ETCs)—10 in Ituri and 2 in North Kivu—were unfortunately recorded, bringing the total number of deaths for the day to 37. However, 41 patients were declared recovered (30 in Ituri, 6 in Haut-Uélé, 3 in North Kivu, and 2 in Tshopo) after testing negative for EVD twice. Since the start of the epidemic in the Democratic Republic of the Congo (DRC), a cumulative total of 7,614 confirmed cases, including 3,676 deaths, has been recorded, representing a case fatality rate of 48.3%. The epicenter remains Ituri province, which accounts for 77.2% of the confirmed cases reported across the seven affected provinces and also accounts for 63.0% of the new confirmed cases. A new health zone was affected on September 18, 2026. Consequently, 63 out of 167 health zones (37.7%) across 7 provinces are affected. Subscribe to Outbreak News TV on YouTube Response measures feature 97% traveler screening at entry points, surveillance expansion to new area Dungu, and community outreach sensitizing over 110,000 people in one day. The Democratic Republic of the Congo’s health system faces deep, structural constraints that predate the current Ebola outbreak and make epidemic response far harder. These problems are most acute in rural areas and the conflict-affected east. Outbreak News Today is a reader-supported publication. To receive new posts and support my work, consider becoming a free or paid subscriber. Subscribe Eastern provinces have seen health facilities damaged, looted, or abandoned. Insecurity delays patients, blocks supply deliveries, and exposes staff to attacks. Millions of displaced people live in camps with poor water, sanitation, and health services, increasing outbreak risk. Vast distances and poor roads mean many people walk hours or days to reach care. These same weaknesses explain why Ebola has continued to spread into new, under-prepared health zones even as some original hotspots show improvement: surveillance, laboratory turnaround, contact tracing, and infection control remain thin outside the best-supported sites. The Ministry of Health and partners have scaled up treatment centres, laboratories, and vaccination in the current outbreak, and some digital surveillance systems (DHIS2) provide a useful backbone. However, the underlying gaps in staffing, basic infrastructure, reliable funding, and logistics have not been closed. Without sustained investment in those foundations, the system will remain vulnerable to both routine disease burden and the next large outbreak. If you like the reporting on Outbreak News Today, please consider a paid subscription for $5/month or $30 a year. Help support the cause of this niche journalism. It is appreciated.
Fillmore County offers measles vaccinations after confirmed case
The clinic will cost $5 per person, or free for those covered by Minnesota Health Care Program Insurance (Medicare/Medicaid).
Scientists mix a simple molecule into perovskite solar layer, and efficiency climbs past 25.6%
Tests showed the combined layer was less prone to clumping and covered the surface more completely.
Longtime AP Florida politics reporter Brendan Farrington dies at 60
Brendan Farrington, a veteran news reporter who covered Florida politics, hurricanes and quirkiness for The Associated Press for more than 25 years, has died. He was 60.
Recap: Boston College scrapes by Maine, 22-16
On Saturday afternoon, the Boston College football team faced off against the Maine Black Bears at Alumni Stadium for Week 3 of the 2026 regular season. The first possession already showed some fireworks when Boston College recovered a Maine fumble on the opening kickoff. But BC failed on their 4th down conversion in the first […]
NC State Alumnus Establishes Full Scholarship for Undergraduate Students in Agriculture Majors
A $10 million gift from NC State alumnus David Peele will give students from eastern North Carolina the opportunity to attend NC State’s College of Agriculture and Life Sciences with the full cost of attendance covered – and spend four years immersed in the research, mentorship and experiences preparing them to lead the future of agriculture.
Scientists Discover New Crater on the Moon, Bigger Than the Roman Colosseum, That Was Created in a ‘Once-in-a-Lifetime’ Impact
Scientists have discovered a new moon crater bigger than the Roman Colosseum, formed in 2024 by a rare impact that also changed nearby lunar surface conditions.
Chivu: “A second half of grit, courage and personality”
A comeback draw, secured thanks to a superb second-half performance from Inter, who recovered from two goals down against home side Roma. The game at the Olimpico showcased great quality, but above al...
M6 Pro Chip Result on Geekbench is Likely Fake
A supposed Geekbench result for an unreleased M6 Pro chip surfaced this week, but it is likely fake. Geekbench creator John Poole informed MacRumors that he uncovered "internal inconsistencies" that lead him to believe that the M6 Pro result might not be legitimate. Geekbench creator John Poole informed MacRumors that he uncovered "internal inconsistencies" that lead him to believe that the M6 Pro result might not be legitimate.
In January 2026, researchers completed a drilling project beneath 1,716 feet of ice in West Antarctica, recovering evidence of an ocean that once lay open to sunlight
The discovery rewrites Antarctica's climate history—and raises urgent questions about how quickly ice sheets can collapse.
The Big Holes in Wearable Heart Rate Variability And Readiness Scores
On September 9th, Apple announced it was revamping its Apple Watch Health Sensing System, rolling out a Readiness score (0 to 10), and increasing the frequency of heart rate variability (HRV) outputs 24-fold. This can be viewed as upping its competition with various other consumer wearable sensors. These “readiness scores” as a composite of multiple metrics, with heart rate variability (HRV) being front and center for most. The majority of Americans are now using wearable sensors, which equates to well over 100 million adults. HRV and Readiness scores are increasingly being marketed as a measurement of autonomic nervous system health, a digital marker for future disease, a clock for biological age, and a holistic metric to promote healthspan and even longevity. (Apple also introduced a new longevity tab and “Health Age”.) None of this has been proven. In this edition of Ground Truths I am going to review what we know about heart rate variability and readiness scores. Heart Rate Variability HRV is the variation in normal heart cycle timing. The variability of the heart rate, the barely perceptible millisecond changes in time between consecutive heart beats (see R-R intervals in the Figure below, left panel), is due to interplay between the sympathetic and parasympathetic (vagal nerve) inputs. Distinct from heart rate, individuals with the same heart rate can have very different HRVs. It is a rough reflection of the autonomic nervous system (ANS) activity, inadequate to say whether a person’s ANS function is abnormal. For more than three decades, heart rate variability (HRV) has been measured and several studies have found an association of low HRV and clinical outcomes, particularly a link with higher all-cause and cardiovascular mortality. There have also been less well established links of low HRV to risk of early cognitive impairment, dementia, mental illness, Type 2 diabetes and substance abuse. An important reminder is that HRV is a surrogate marker without any established cause-and-effect relationship. If you increase your HRV, that doesn’t mean it will improve health outcomes. In fact, there is no hard evidence for that. All that work linking to health outcomes was done with electrocardiogram (ECG) derived HRV. Now, in the era of consumer wearables, this is getting assessed differently, by optical pulse (yes, the lights you see) plethysmography (PPG) or what is called pulse rate variability (PRV). They are not the same, as shown below (right panel) and only concordant when the delay between the ECG and pulse is kept constant, which basically means at rest. I should mention there’s also what I will call MPV, a mattress mechanical movement sensor, a derived heart rate variability, that companies like Eight Sleep use, even further away from directly measuring HRV. HRV has not one uniform measurement but many different types of quantification, such as RMSSD, the magnitude of difference between successive R-R intervals of normal sinus beats (N-N) or SDNN, the standard deviation of NN intervals, both in milliseconds. SDNN is one of the so-called frequency domain HRVs (others are LF, HF, LF/HF). Different wearable sensors use different metics; Apple has relied on SDNN and nearly all of the others use RMSSD, which is generally considered the more accurate metric. There’s also the different length of time measured, such as for a matter of minutes, all day, or an overnight’s sleep. Short measurements are especially problematic since they don’t capture enough of respiratory modulation and other factors that influence HRV. Share Ground Truths How well does HRV correlate with PRV? There are very limited studies, especially independently done. One that is commonly cited was conducted by Air Force researchers in only 13 healthy adults assessing Oura ring 3 and 4, Whoop 4.0, and Garmin Fenix 6 and showed a correlation coefficient of 0.88 to 0.97 and a mean absolute percentage error from 6 to 10%. The correlation is not a perfect 1.0, but there’s at least a fairly high level of correlation. HRV is supposed to increase during the night due to takeover of the parasympathetic nervous system, and higher during deep sleep. A recent example of my 1 week, all day “HRV,” and one during sleep is shown below. As you can see, the N of 1 data are inconsistent for the same days from different sensors (Oura, AppleWatch, Fitbit Air, and Eight Sleep) by patterns, absolute numbers, and comparison with prior days and weeks. The largest study in over 8 million Fitbit users (the old version, not Google Fitbit Air, introduced in May 2026) gives you a sense of the effect of age, sex, and the 2 different main HRV (here PRV) metrics, with RMSSD on the left and SDRR (=SDNN) on the right below. That study, from data collected in 2018, is a major outlier, since all the more recent ones are tiny with respect to sample size. Many of the companies have not had independent evaluation of their HRV, such as Eight Sleep, but have published a low standard error on their website. There are some other published studies on the correlation between HRV and PRV, but they are all small and only in healthy adults. A scoping review emphasized the lack of study in underrepresented individuals, including the aged, people of color (which affects the PPG signal), and individuals who are underweight or obese. Add the typical adult age 60 plus with one or more chronic diseases. For example, one study in over 900 adults found poor correlation of HRV and PRV, non-uniformly underestimated across many chronic diseases (cardiovascular, endocrine, neurological, respiratory, and others), concluding PRV is “an invalid surrogate for HRV.” A recent systematic review of 43 studies comparing HRV and PRV found reasonable pooled absolute standardized error (HRV as gold standard) but only 10 of the studies provided quantitative synthesis in ideal conditions. Their main conclusion was similarly cautious: “PPG-derived HRV [PRV] should not be regarded as universally interchangeable with ECG-derived HRV across all devices, populations, and recording contexts.” Factors Affecting HRV and PRV That gets me to the long list of factors that affect HRV (and PRV) besides the device, the type of measurement (RMSSD, SDNN or others), the person’s signal, the sensor site, the duration of data capture, if weighting by sleep stage is used, how artifact is processed and corrected. And this list is not complete!: Oura puts out data from their community of users (who input data) on what affects their overnight HRV. The factors currently provided are: no alcohol (increase 8%), melatonin (increase 2%, float tank (increase 2%), wine (decrease 4%), and party (decrease 14%) in overnight HRV. Must be some big parties! Subscribe What is a PRV measurement good for? It has been falsely characterized as an index of “autonomic balance” and a specific indicator of stress. A 2018 review of the studies available for HRV and its relationship to stress, not using any of the current wearables, found that stress can lower HRV. But so can many other factors. The non-specificity of the signal, indexed to the table above, is striking. Evidence from a UK Biobank study of over 46,000 participants with actual HRV looked at genetically predicted HRV, a genetic risk score, that failed to show the expected HRV-mortality link, indicating that _HRV is likely not causa_l, but rather a reflection of person’s physiologic state. A review of consumer wearable HRV data from 5 longitudinal studies showed that nighttime PRV was not associated with perceived stress, and surprisingly higher HRV, in the largest cohort (N=717 participants), was correlated with higher stress. An Oura ring cohort of 525 first-year college students found a link between overnight PRV and perceived stress, but that was also seen with resting heart rate, sleep, and respiratory rate. Several very small studies have examined the relationship of HRV and athletic injuries or guiding training with mixed, and predominantly negative results. HRV biofeedback training with paced breathing had no significant effect on reducing stress or raising HRV, as demonstrated with sham controlled trials. When HRV for multiple days showed a decline in conjunction with body temperature, the Oura ring published data for prediction of Covid. The WHOOP company sponsored an observational study, published in 2026, of 30,000 users for 72 weeks, without a control group, that reported reduced alcohol intake (5.8 % points) by self-report. That doesn’t tell us much, and particularly about the merits of HRV for behavioral change. If you use the same device and conditions as longitudinal trends for multiple (at least 2-3) weeks that may be the one way to get something useful from the measurements. Data for overnight sleep with minimal motion and using RMSSD is the best proxy for real HRV. The reason to look at trends rather than any given night is that it more likely represents something, even though you won’t know with certainty what the “it” is. Keep in mind there are no data, no peer-reviewed evidence, to show that HRV fluctuation in-person has any correlation with health outcomes. Share Readiness Scores These are proprietary scores that integrate different metrics for each of the wearables: no algorithms have been disclosed. They are unvalidated against health outcomes. In a review of 14 composite health scores of readiness and recovery, HRV contributed 86% to the scores, followed by reading heart rate (79%), physical activity and sleep duration (both at 71%). That review noted the substantial variability in measurement protools and lack of standardization. Sleep staging is notoriously inconsistent and inaccurate by these sensors, which adds further to the HRV uncertainties for what the scores, which use sleep stage data, mean. Only resting heart rate has been shown consistently across devices to be extremely accurate. I’ve made a Table to summarize what we know about which metrics are included, the scores, any peer-reviewed studies that compared the readiness score with health outcomes, and the corresponding (if any, NA-not available) citation. You will note that some companies do not use the term “readiness," such as WHOOP for recovery, and Garmin, which has 2 different scores, one of which is Body Battery. Eight Sleep uses the term “Fitness Score.” They all include HRV; Apple includes a new metric they call “Recovery HRV” which among other components uses 7-days of sleep, but it is unclear what this means or how it is differentiated from other scores (there are clearly no data for outcomes). We have no knowledge of how the different components are weighted or whether any of these scores are better than resting heart rate, HRV alone, physical activity, or any other single metric. Since none of these are standardized, they are not interchangeable, so if you get a 90 for Oura that has no relationship to a 90 on a Google Fitbit Air. Notably, the company can update its algorithm for readiness score at any point without notification to device users. Without any useful evidence of actionability for these scores or established relationship with health outcomes, it is hard to make a case for their value. At the Apple recent announcement they showed their Readiness score (0-10) on the watch (Figure below) but there are no published data on this score, not even on their website. It’s available only on their new Watch Series 12 or Ultra 4 [of course, ;-)]. That exemplifies the problems with these scores, lack of data and evidence for being meaningful to promote health. Perhaps the best study (which isn’t saying much) is the WHOOP Recovery for golfer performance, because it did correlate with an objective outcome, even though there was no control group and the authors were all from the company. Among the 389 pro golfers, an absolute 10-per cent point increase in Recovery score was associated with about 0.5 fewer strokes per round. But that’s hardly a health outcome! WHOOP is also conducting a study in over 2,700 runners to see if their recovery score will be linked to less injuries and improved performance, but that is not yet published and has no control group or randomization. Putting This in Context For two decades I’ve been enthusiastic about the potential for digital health and particularly wearable biosensors. Over the years, we’ve seen some great progress for their ability to promote physical activity and accurately detect atrial fibrillation (the first FDA cleared deep learning AI for consumers). That work was the subject of rigorous research. But there are holes in the data and evidence for other metrics. One notable one is the “VO2 max” story that I wrote about earlier this year. At that time many subscribers asked me to cover heart rate variability, which I finally got to here. When I dived into the research and publication for HRV and readiness scores, I expected to find at least some that were of high quality and demonstrated their utility by linkage to health outcomes. To my surprise, I found none. The wearable sensor measurements for HRV (PRV) are, for the most part, accurate, but that validation work has only been done in small studies of healthy adults and does not take into account the long list of factors, from the device, software side, and the user side, that affect HRV measurements. Moreover, this metric chiefly relies on optical sensing and, as we have learned for heart rate PPG sensing, may be less accurate in people of color. Keep in mind that all of the health outcome association evidence comes from ECG-derived HRV; none are from wearable sensor data. I will repeat the key point: there's no peer-reviewed evidence to show that in-person HRV fluctuation—or efforts to raise your HRV— has any correlation with health outcomes. For those of you who look at your HRV on awakening, or even 2+ week trends of it being low, I hope this context helps to relieve any anxiety. Yes, low HRV (not PRV) has been shown to increase risk of some diseases as summarized above. But efforts to raise your HRV—a surrogate metric— has not been established for improving any health outcomes. HRV does not have any evidence of causality (the genetic evidence actually goes against this possibility). In this summary, I have not included data for other wearable sensors such as Polar, Samsung, Withings, Suunto, Amazfit, Coros, Ultrahuman, or additional mattress sensors. These are beyond my first-hand experience, and as far as I know from my in-depth review none have any peer-reviewed published data that differ from the 6 sensors I’ve reviewed here. From the points I’ve gone over above, we’re not ready for readiness scores. Besides being proprietary, they are predominantly based on metrics that have their own issues. It’s compounding the problem, like building a house without a solid foundation that has never undergone a rigorous inspection, and then selling it. Like I mentioned for PRV, you can look at trends over weeks rather than any single day, to get a handle, but even that may not be helpful. There’s simply no evidence that these scores meaningfully relate to health outcomes. I’d emphasize they might, but that requires doing prospective or randomized studies to prove it. None exist. There’s great promise for HRV/PRV utility_. For example**,**_ Prof Maiken Nedergaard, who discovered the brain glymphatics that are essential in eliminating metabolic waste products from the brain during sleep, has posited that HRV could be a non-invasive marker for neuromodulator oscillations, brain-body regulatory circuits, and brain clearance. That would be extremely useful, but like everything else on HRV and readiness scores it requires solid research and validation. The lay media isn’t helping much to get the story straight. Earlier this year The Economist published a piece entitled “The most useful indicator of your overall health” which ordained HRV as an “accumulated stress score.” That’s akin to the false assertion about VO2max: “V02 max is the singular most powerful marker for longevity.” As I’ve summarized here, that is not established. The fact is that so many things can lower HRV, including physical exercise (especially an intense workout), reduced sleep quality, stress, the list above, no less the device, signal, and software. Whatever fluctuations observed have not been correlated with any health outcome. Sadly, “datamaxxers” are widely using HRV and readiness scores that have never been validated to mean anything. We already know that for some people using the sensors for sleep metrics, it can induce “orthosomnia,” an obsession to get high sleep quality, with associated high levels of anxiety. In an experiment done by a company to promote sleep quality for its employees, “For those employees who did use the trackers, many reported feeling perfectly rested until their tracker told them they had had a terrible night. Others were told that they had slept like a baby when they had actually been lying awake worrying about the quality of their sleep. “ The same problem can result from preoccupation with HRV or readiness scores, with anxiety that would lead to further reduction in both. It you are using a wearable like >100 million American adults, it’s OK to look at these data, but contextualized with the major caveats reviewed here. If you are one to require evidence that HRV or readiness scores are linked to health outcomes, you may not even want to look. The companies make it hard to turn them off! Let me end with the companies that make and sell wearables. Apple’s doubling down on HRV (24-fold more reporting and heart rate very 5 seconds) and introduction of a Readiness score tells us that consumers have bought into these metrics and they are joining the club. However, all of this is occurring with a backdrop of tens millions of users, claims about the data that are not backed up by adequate evidence, marketing way out in front of whatever limited data exists, and not being transparent about their readiness score algorithms. The companies can well afford to do the research that is needed to connect these metrics with health outcomes show, once and for all, that increasing HRV or using readiness scores promotes our health. If they believed and invested in the products they are selling, we’d not be in this position of not knowing. That’s essentially where we are with HRV and readiness scores. Perhaps someday this will change and we’ll have good reason to embrace them. NB: I wrote this post. No AI. I have no conflicts of interest with any of its content. Loading... Ground Truths has 215,000 subscribers from every US state and 214 countries. There are over 300,000 followers of Ground Truths so more than 90,000 folks who can easily convert to be free subscribers. Your subscription to these free essays and podcasts makes my work in putting them together worthwhile. If you’re not a subscriber, please join! If you found this interesting PLEASE share it! Share Ground Truths The proceeds from all voluntary paid subscriptions go to support our summer internship program. It enabled us to accept and support a record number of 62 summer interns that joined us in 2026! These are high school, college and medical students selected from thousands of applicants. We couldn’t do this expanded program without the funds coming in through Ground Truths. Thank you!
In March 2025, a baby colossal squid was filmed alive in its natural habitat for the first time, a translucent animal about a foot long drifting 1,968 feet down near the South Sandwich Islands. The species was named a century earlier from two arm crowns recovered from a sperm whale's stomach.
A century after scientists named this deep-sea giant from whale stomach contents, a camera finally captured one alive—and it looked nothing like expected.
Scientists discover a new tiger cat hiding in plain sight
A newly identified South American tiger cat is the first cat species discovered in a century. revealing more diversity among tiger cats than previously known.
Webb Telescope may have uncovered ancient stars powered by dark matter
Dark stars are candidates for the first stars that formed in the Universe, 200 million years after the Big Bang, and powered by dark matter.
Scientists Just Discovered a New Cat Species, and It’s Ridiculously Cute
A CDC report found that 71.5% of adults experienced fatigue over three months, with young adults reporting especially high rates.
ABC7 Sports Overtime with Dionne Miller: Sept. 18, 2026
On the latest ABC7 Sports Overtime, Dionne Miller covered the Chicago Bears' record-breaking offensive performance against the Carolina Panthers as they prepare to take on a tough Minnesota Vikings defense.
National Legal and Business Media Cover Arrival of Chicago Partner Andrew Barrios
Law360, Global Legal Chronicle, Corporate Counsel Business Journal, Benchmark Litigation and Pulse 2.0 were among the legal and business news outlets that covered the arrival of McGuireWoods partner Andrew Barrios,...
NASA spacecraft discovers a huge new crater on the moon
Scientists have discovered a crater on the moon that's bigger than the Roman Colosseum, the result of a powerful impact two years ago.
Ancient hidden graffiti discovered in Bronze Age temple
Laser scans revealed nearly invisible ship etchings in Cyprus created over 300 years.
New Species of Cat Discovered for First Time in a Century
The species, called a tilcayo, is smaller than a house cat and lives in the cloud forests of the Andes Mountains in Bolivia.
Reality TV star Porsha Williams reveals she had to undergo emergency partial hysterectomy: "It all happened so fast"
Porsha Williams revealed to "CBS Mornings" co-anchor Gayle King that she had to undergo an emergency partial hysterectomy this year after doctors discovered 21 uterine fibroids
Scientists just named a new snake after Guns N’ Roses legend Slash
A newly discovered snake from New Guinea has been named after Guns N’ Roses guitarist Slash, who has loved reptiles since childhood. Genetic testing and physical differences confirmed that the reddish-brown groundsnake, Lielaphis slashi, is a species scientists had never formally recognized before. The nonvenomous snake may use large rear teeth to catch slippery lizards and reptile eggs.
Scientists discover cells that cheat death and rebuild damaged tissue
Scientists discovered a population of cells that can start the process of programmed cell death, survive it, and then help rapidly rebuild damaged tissue. Their descendants become far more resistant to future damage, revealing a mechanism that could improve healing but may also help cancers return after treatment.
Scientists Have Uncovered Previously Hidden Microbial Activity on Human Skin
The most abundant microbes on your skin may not be the ones doing most of the work. Human skin supports vast communities of bacteria, fungi, and viruses that can influence its protective barrier, immune defenses, and overall health. Yet simply cataloging these organisms cannot reveal which ones are active, how they respond to their surroundings,
Bolivia: New cat species discovered by scientists
Genetic data confirmed that the small feline, called "tilcayo" by locals, is a new species of cat. It's the first such discovery in more than 100 years.
Northglenn science teacher finds T. Rex footprints in first-ever discovery
The first-ever discovery of a T. Rex trackway is coming to the Denver Museum of Nature and Science, after one Denver teacher discovered in North Dakota’s badlands.
New RatHat Android malware uses AI to automate device control
A new Android malware called RatHat has been discovered, targeting users with an AI-powered subsystem that helps operators remotely navigate compromised devices.
This week in science: T. rex footprints, solar 'superflares,' and benefits of reading
Paleontologists have discovered the tracks of a giant — the fossilized footprints of T. rex. Plus, solar "superflares" and the brain benefits of reading in this week's Short Wave science news roundup.
Hidden Megacities Discovered Beneath Amazon Jungle: Scientists Stunned by Scale - Futura-Sciences
Millennia-Old Urban Networks Revealed by Modern Science It turns out, the Amazon wasn’t always the wild jungle we picture today. Between around 600 BCE and 850 CE, a civilization known as the Aquiry dramatically transformed large parts of the southwestern Amazon Basin. These people dug colossal ditches and geometric earthworks,...
This million-year-old 'baby planet' is the youngest world scientists have ever discovered
Astronomers have confirmed a large exoplanet is forming in the cloud of debris around a young star. At less than a million years old, it's the youngest exoplanet found so far.
The Next Gene-Editing Technology May Also Be the Oldest
Scientists have discovered a powerful gene-targeting system in viruses. Billions of years old, VIPR seems to predate CRISPR and may be even more powerful.
17 cats found dead, 20 rescued from extreme heat at Walker business; woman faces 66 charges
A Walker woman faces dozens of animal cruelty charges after authorities say they discovered nearly 40 cats and kittens suffering in extreme heat without food or water inside a local business.
17 cats found dead, 20 rescued from extreme heat at Walker business; woman faces 66 charges
A Walker woman faces dozens of animal cruelty charges after authorities say they discovered nearly 40 cats and kittens suffering in extreme heat without food or water inside a local business.
NASA satellite discovers a new crater on the moon
Scientists have discovered a crater on the moon that's bigger than the Roman Colosseum and is the result of a powerful impact two years ago that initially went undetected.
17 cats found dead, 20 rescued from extreme heat at Walker business; woman faces 54 charges
A Walker woman faces dozens of animal cruelty charges after authorities say they discovered nearly 40 cats and kittens suffering in extreme heat without food or water inside a local business.
Police: 17 cats found dead in extreme heat at Walker business; woman arrested
A Walker woman faces dozens of animal cruelty charges after authorities say they discovered nearly 40 cats and kittens suffering in extreme heat without food or water inside a local business.
Health insurers covered 112,000 fewer Mass. residents’ GLP-1 weight-loss drugs this year, report finds
Insurers restricted coverage for obesity after years of financial losses.
Dolly Parton honored posthumously, shares prerecorded video message
Singer Dolly Parton performs, January 24, 2014 in Rancho Mirage, Calif. (Valerie Macon/Getty Images)The late Dolly Parton is sharing a new video message, which was recorded before she died in August.The Americana Music Association released Parton’s video Wednesday, which was submitted as part of her acceptance of the Lifetime Achievement Award at the 2026 Americana Honors & Awards.“Roots music, or what is now called Americana music, is what I grew up playing back in the Smoky Mountains,” Parton said in part in the video. “It’s that same music that drew me back to East Tennessee back in 1997 to write and record my album 'Hungry Again.' And that project really opened the door to a series of bluegrass and acoustic albums that changed the course of my career in so many ways.”“Now, new fans discovered these albums, new Americana music communities embraced them, and now looking back at it all, I see this era of my career as a musical renaissance of sorts,” Parton continued.The Americana Music Association announced in August that Parton — whose songs include “I Will Always Love You,” "Coat of Many Colors" and “Jolene” — was being recognized for her “enduring contributions as one of history’s greatest songwriters and recording artists.”Parton was in good company: Emmylou Harris, Van Morrison and Willie Nelson are among the artists who have been honored with the Americana Music Association Lifetime Achievement Award.Parton, a Tennessee native, died on Aug. 25 at the age of 80 following a private battle with cancer, according to her family.Throughout her six-decade career, Parton built a legacy that expanded beyond music into entrepreneurship and philanthropy.Copyright © 2026, ABC Audio. All rights reserved.
Scientists discover a mysterious new frog hiding in the Amazon
Scientists discovered a new frog species in the flooded forests of the western Amazon, distinguishing it from nearly identical relatives through DNA and its unique call. Adenomera varcena highlights how much Amazonian biodiversity remains hidden even as habitat loss and climate change threaten these poorly understood species.
Dario Wins Contract with One of New Jersey's Largest Health Plans Representing 1.5 Million Covered Lives
/PRNewswire/ -- DarioHealth Corp. (NASDAQ: DRIO) (the "Company", "DarioHealth" or "Dario"), a leading AI-powered healthcare technology company transforming the...
Working Missourians can't afford hidden hospital contract games
Every year, the trustees of our carpenters’ health and welfare fund sit down to figure out how much it will cost to keep our members and their families covered. And every year, the number goes up. Not because our members are getting sicker. Not because they’re using more care. It goes up because health care […]
What's new to streaming this week? (Sept. 18, 2026)
What’s new on Netflix, Prime Video, Hulu, and more? We've got you covered.
Sidewalk construction uncovered a coal chute, leading to a dispute over repair costs
Sidewalk construction uncovered a coal chute, leading to a dispute over repair costs
Trump tests the limits of political make-believe in North Carolina
‘Some of you like me more than you like the party,’ US president tells small crowd in a speech that no major network covered live
A Vocation Discovered: Dwayne Simmons’ Journey to Becoming a Renowned Neuroscientist
Since earning his bachelor’s degree from Pepperdine University, Dwayne Simmons has forged a career as an esteemed neuroscience professor, researcher, and newly inducted fellow of the American Association for the Advancement of Science (AAAS). In looking back on his accomplished vocational journey, the neuroscience considers his undergraduate education in Malibu to be the key that unlocked his potential.
What Does the Science of Climate Change Really Look Like?
Editor’s Note: This is the second in a three-part series on how the Right should think about environmental and climate policy. Read Chris Barnard on Reclaiming Environmental Policy from the Left. More than a decade ago, the world’s governments negotiated and signed the Paris Climate Agreement, committing to hold global warming well below 2 degrees Celsius. In the following years, climate had immense cultural power. Greta Thunberg emerged. Fortune 500 companies established net-zero plans. The U.S. got the Inflation Reduction Act. Then the pendulum swung back. President Donald Trump returned to the Oval Office, speaking of green energy as a “scam” and carbon footprints as a “hoax” and on all matters of international policy emphasizing bilateral engagement and power over globalism and cooperation. The technology companies that had been at the forefront of net-zero pledges and green leadership discovered the importance of all-of-the-above power to their visions for artificial intelligence and began quietly postponing or removing their targets. On the left side of the political spectrum, rising concerns about inflation and cost pushed climate lower down in the stated priorities of voters and stump speeches of politicians. The moment is ripe for a reset on the politics of climate change and for conservatives especially to chart a course that acknowledges and addresses the real challenges in plausible ways. So what should we think about climate change as we enter a post-peak climate era? If it is neither an apocalypse nor a hoax, what will hold up as a durable view of climate change? And how does it project onto the concerns and priorities of the right-of-center’s emerging coalition? New to Commonplace_? Subscribe below to get the magazine in your inbox._ Subscribe A Solid Foundation As the politics and economics of climate careened over the past ten years, the physics carried on regardless. In 2015, the year the Paris Climate Agreement was adopted, the world emitted 41.2 gigatonnes of carbon dioxide. By 2025, emissions had risen only 2.4%, to 42.2 gigatonnes, because falling emissions from land use offset increasing emissions from fossil fuels. But slow growth in annual emissions is not rapid decline, let alone net-zero, so carbon dioxide kept accumulating in the atmosphere, going from 399 to 426 parts per million. Global temperature kept rising too, from about 1.1 degrees Celsius above the 1850–1900 average in 2015, to 1.4 degrees above it in 2025. None of this should surprise anyone. Even most prominent skeptics, like the authors of the 2025 report commissioned by the Trump administration’s Department of Energy, accept the basic physics. Carbon dioxide added to the atmosphere at industrial volumes accumulates and traps heat that would otherwise escape to space. That heat warms the upper ocean and increases temperatures at the surface. Increased ocean heat and melting of land ice cause sea levels to rise. Changes in the climate become noticeable to us as subtle shifts in temperature and precipitation, seasons arriving early or late, changes in the surrounding ecosystem, and weather extremes. The much more meaningful debate is not about whether these things are happening, but about what it all means for human societies. (While it is a proxy measure of overall risk, no one experiences global surface temperature.) This debate invokes at least three interesting questions: how much today’s warming is showing up in regional climate trends, how much more warming we should anticipate, and how extreme weather events can be understood in the context of climate change. Recent scientific advances give us new insights into each of these, but there is still much to learn. This is the context in which the next generation of conservative leaders will be the first to deal with significant climate change as a fact, not a forecast. It will be with them for their entire careers. Our evolving scientific picture of climate change will come from weather and climate records stretching further into the past, new kinds of observations in the present, better modeling tools for the future, and simply more time to observe the emergence of climate signals and their tangible effects on ecosystems and communities in the United States and around the world. The policy landscape will be shaped by not only the impacts of changes in the climate, but also by the ways in which societies respond and by the emergence of new technologies for both altering the trajectory of emissions and adapting to new climate realities. Global climate records now show the fingerprints of warming in different phenomena around much of the world. The IPCC, in its most recent assessment report, documents warming trends over all land regions, even as natural variability adds substantial variance to local trends. And the highest temperature extremes have become more intense and frequent, almost everywhere, since the 1950s. Scientists are highly confident that these changes are attributable to human influence. But confidence in detecting trends and attributing them to human influence degrades across heavy precipitation events; drought trends are heterogeneous and not attributable to human activity with great confidence. For hurricanes, tornadoes, and other severe storms there is even less confidence in trends or their relationship to climate change. In general, a fair summary of the evidence is that for well-observed phenomena, like surface temperature or heavy rainfall, with a clear relationship to warming, our multidecadal observations are consistent with human influence overcoming natural variability over long time periods and extremes increasing. For regions that are sampled more sparsely, or phenomena with a higher noise-to-signal ratio, we will need to observe them longer to understand the magnitude of the climate signal or improve dynamical understanding using models and observations together. But for Climate For those who can’t wait, we also have new techniques that attempt to understand the role climate change has in influencing particular extreme events. When the climate is changing and disaster strikes, it is natural to ask whether that disaster was somehow “caused” by climate change. For scientists and policymakers acting in good faith, answering that question helps develop a more accurate picture of the problem, how it may be getting worse, and what preparations we should be making to respond to it. It may, at some point, give some weight to how liability is assigned by courts or adaptation funding is distributed by society. But how we ask this question is extremely important. It is easy to get the analysis wrong by discounting the role that meteorology plays. As meteorologist Theodore Shepherd explained in a clear 2016 review of climate attribution methods, “if a weather or climate event is truly extreme in the present climate, then perforce it requires unusual meteorological conditions, which means that climate change is at most a contributing factor.” Share Scientists have two ways to probe climate as a contributing factor, both of which have entered media coverage of extreme weather events. One asks a probabilistic question: How much more likely is a particular event (e.g., a temperature record over a particular area) amid global warming? The answer involves using historical records and computer simulations to estimate the likelihood of such an event in both a changed and a preindustrial climate. The findings are less about the specific event, and more about events of that nature. The other question is: How has the changed climate affected the specific event in question? Here, scientists try to understand what a similar event would have looked like in the preindustrial climate. This is sometimes called the storyline approach, where the story is the specific meteorological details of the event. These methods offer ways to test the intuition of scientists about real weather extremes. In late June and early July of 2021, a persistent high-pressure ridge, or heat dome, set up over the Pacific Northwest and an extraordinary heat wave affected the area from Oregon to British Columbia. For six days, it shattered temperature records across the region and hundreds died from heat-related causes, in an area where such high, and persistently high, temperatures were well outside of experience and many live without air conditioning. Scientists have studied its connection to climate change using multiple approaches. This specific event was created by a rare combination of meteorological factors, a strong high-pressure ridge created the conditions for extreme heat, which occurred on top of higher average temperatures in the region from global warming. Probabilistic analyses showed that climate change increased the likelihood of such an event by at least 8-fold to more than 100-fold. One standout example found that such an event had effectively zero probability of occurring in the preindustrial climate. The enormous range in these assessments reflects how hard it is to estimate probabilities of events at the tail of the historical record. Estimates of the effect on the temperature of the event are more clustered. A recent review paper documents how multiple methodologies have found a positive influence, roughly 1-2 degrees Celsius of an anomaly that exceeded 15 degrees, of climate change on the temperature magnitude of the event. Multiple studies have investigated and found some positive influence of climate change in other extreme events. Attribution studies found climate likely increased the heavy rainfall that accompanied Hurricane Helene in North Carolina and surrounding regions in 2024. The extensive fires that struck Los Angeles in 2025 illustrate how the causal chain can become messy, though. Studies do detect a positive influence of climate on the event’s likelihood, but while climate change likely contributed to underlying aridity, it would not have played a role in the heavy winds or land practices that preceded disaster. These event attribution studies will become more common for extreme, or damaging, weather events. They can be produced quickly, and often are reported before peer review. As the Pacific Northwest heatwave example shows, when multiple methods converge on a positive attribution, the finding should probably carry some weight even if you have to be careful about accepting the results from a single study. I expect that as climate change proceeds and the climate thus departs further from a preindustrial counterfactual, the influence will become more detectable across a variety of extreme events and more easily identified. This will be used to cast blame, but can also be used to inform how communities and society adapt to ongoing change. We May Still Be Surprised One positive development, insofar as less climate change is better, has been that our central estimates for future climate change should probably be revised downward. Mostly, that is because the high-end warmings that scientists regularly analyzed about ten to 20 years ago, driven by high emissions throughout the twenty-first century, now appear to be somewhere between unlikely and impossible. At one time, the upper end of mainstream climate projections extended well into 4 to 6 degrees Celsius of warming by the end of this century, which, models suggest, would have wrought enormous real-world damage. Current energy and policy trends now point toward 2.5 or 3 degrees. Damages and risks are commonly modeled as increasing steeply with more warming, so this is already a better-than-previously-expected outcome for the climate (which is independent of the physical response to emissions). But we should maintain a wide range for plausible outcomes and prepare for the possibility of being surprised. Emissions trajectories are subject to deep uncertainty, the physical climate response is still developing, and whatever change occurs in the climate will then be mediated through unpredictable economic, social, and political institutions. Over the past decade, the pace of warming surprised some keen observers and appeared to accelerate, though not yet outside the range of expectation provided by climate models. The reasons for that apparent acceleration are being actively studied (as was the apparent pause in warming from 1998 to 2012), but no single driver has emerged. Some blame it on the El Niño, variability which would have no bearing on climate. Some think it is a result of factories in East Asia and global shipping fleets cutting aerosol emissions, which in the strongest version of the argument would indicate higher climate sensitivity to carbon-dioxide emissions. Others are more measured, not yet ready to draw solid conclusions as to whether climate projections require revision. We will have to see. Long-Term Thinking Climate change asks us to think over long time scales. But the pace of human-driven warming is compressing a large global change into a century. Changing weather patterns and extreme events are already causing adjustment costs and damages and will do more. Adaptation will help, but it is not free. For some communities, these costs will erode livelihoods and well-being, and may force migration. Are we prepared for large-scale managed retreats in the United States? Thankfully, American wealth, geographical diversity, and moderate climates may leave us better prepared than many around the world. But wealthy countries can still suffer serious disruption from narrowly concentrated costs, even if they appear entirely manageable in aggregate. Readers of Commonplace are familiar with the challenges of rapidly adapting to economic forces. The displacement that came from the China Shock is barely perceptible in aggregate GDP and employment data, but it affected millions of people and those people were far less mobile than economic models tended to assume. Deindustrialization rippled through the nation with enormous effects for not only our economic vitality, but also our national security. The forces surrounding climate change may not be so different; the world gets richer and must accept some diffuse costs. Those may be modest overall, but cause all manner of unpredictable effects with which policymakers must cope. In the case of the China Shock, our faith in a growing pie served us poorly. We’ll need to do better on climate. Leave a comment
1,700-year-old fragment of the 'Odyssey' discovered between pages of Dutch library book
The fragment is from Book 12, when Zeus curses Odysseus' men for killing and eating Helios' sacred cattle.
Hacker stegan0gram reveals Flock AI surveillance capabilities
Hackers hijacked a Flock camera and discovered its software generates over a million of images from a single vehicle using license plate recognition for surveillance.
Apple’s Health App Hits Developer Beta. I Got the Inside Scoop From Apple’s VP of Health
From readiness, longevity and AI insights to blood tests and movement assessments, we covered everything about the Health app’s redesign.
Scientists find an immune “false alarm” that may drive rapid aging
Scientists have discovered that some severe genetic disorders linked to rapid aging may be driven not just by damaged DNA, but by the body’s overreaction to that damage. When broken DNA fragments leak into the wrong part of a cell, an immune sensor called cGAS can mistake them for signs of a viral infection, triggering chronic inflammation and even interfering with DNA repair itself.
Study: Why Colder Temps Can Be Better for Removing Ice
By Kim Horner | Mechanical engineering research associate Yao Ren exposes an ice-covered metal surface to dry ice to cool it further. Researchers found that a material’s thermal properties play a critical role in determining whether ice remains attached to a surface — a discovery that may lead to the design of future deicing systems for […]
Michigan health officials express concern about common product growing in "recreational" use
Nitrous oxide has medical and culinary uses. But is also marketed for recreational use in grocery stores, smoke shops, vape stores, gas stations, convenience stores and online.