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Lawsuit alleging Fanatics, leagues monopolizing sports card industry dismissed
The lawsuit came in the wake of Panini's claims against Fanatics.
Instagram and Facebook are pushing deeper into shopping and ads
Meta unveiled a slew of new shopping and advertising updates to woo brands and creators. Influencers can soon earn a commission from affiliate links.
GOP candidates lead in CADEM-commissioned gubernatorial poll
This extraordinary pressure campaign is only just beginning
Public health alert issued for this ground beef product. Here's why.
The Food Safety and Inspection Service issued a public health alert for a ground beef product on March 23, due to metal contamination.
Democrats’ long-shot bid to flip Alaska’s Senate seat
Democrats are hoping for an upset in Alaska’s Senate race. U.S. Rep. Mary Peltola, a Democrat, is trying to unseat Republican incumbent Sen. Dan Sullivan. We discuss the major issues at play, plus why Republicans are backing an effort to repeal Alaska’s ranked-choice voting system.This episode: voting correspondent Miles Parks, senior political editor and correspondent Domenico Montanaro, and Alaska Public Media Washington correspondent Liz Ruskin.This podcast was produced by Casey Morell and Bria Suggs, and edited by Rachel Baye.Our executive producer is Muthoni Muturi.Listen to every episode of the NPR Politics Podcast sponsor-free, unlock access to bonus episodes with more from the NPR Politics team, and support public media when you sign up for The NPR Politics Podcast+ at plus.npr.org/politics.
Advancing Science, Students Provide Fun and Free STEM Programs for Low-Income Youth
Alyssa Huang seriously loves science and math. And she’s on a mission to make every kid feel the same way.
How easing regulations on heavy metals air pollution could impact health | Harvard T.H. Chan School of Public Health
A recent repeal of federal environmental regulations aimed at limiting the emission of mercury and other heavy metals from power plants could have serious health impacts, according to Harvard Chan School experts.
Episode 68, Science for Success, Tissue testing and Potassium
By Dusty Sonnenberg, CCA, Field Leader, a project of the Ohio Soybean Council and Soybean Check-off In Episode 68, Dusty visits with soybean researchers involved in the Science for Success program. Science for Success provides timely, cutting-edge best management practices by coordinating the uni
Ravens were reportedly concerned about Maxx Crosby's degenerative knee issue for beyond 2026 season
Missouri court upholds mid-decade congressional redistricting backed by Trump
A Missouri court has upheld a mid-decade redistricting plan that gives Republicans a chance to win an additional congressional seat in this year’s midterm elections
'Sports Illustrated Swimsuit' Teases Sexy New Photo Shoots with Bethenny Frankel, Ilona Maher and More
'Sports Illustrated Swimsuit' teased its forthcoming 2026 issue featuring a mix of newcomers, as well as fan-favorite veterans.
Sherrill flexes political muscle in midterm battle between moderate Democrats and progressives
New Jersey Gov. Mikie Sherrill launches Mission to Deliver PAC, aiming to boost moderate Democrats in key federal and statewide 2026 midterm races.
Billionaire OpenAI investor Vinod Khosla thinks 80% of jobs could vanish by 2030, and that ‘fear of AI’ put American politics in a chokehold
“The single biggest issue I believe in the 2028 presidential election will be fear of AI,” the Khosla Ventures founder said.
Dimon warns on AI job losses, calls for government-business incentives
The potential AI-related disruption of the job market is a critical issue in Washington, with lawmakers trying to curb the amount of job displacement.
Marathon has sold 1.2M copies across Steam, PS5, and Xbox
Alinea Analytics estimates show that Marathon has generated gross revenues of $55M via 1.2M copies sold on Steam, PS5, and Xbox: Looking at the split between Steam, PS5, and Xbox, Steam is clearly the main platform for Marathon, accounting for a little under 70% of the audience (800K copies sold). Meanwhile, PS5 takes about 19% (217K) and Xbox (including console, PC, and cloud) accounts for a bit over 11% or 133K. Marathon is technically a first-party Sony title, so seeing the home console struggle to break 20% of the volume is a notable data point for the ongoing platform-agnostic debate. PlayStation Studios online games will almost certainly continue being multiplatform (despite Sony reportedly pulling back on PC releases). Subscribe for free to get the most accurate games estimates in your inbox twice a week 🫶 Subscribe As for Marathon, the consensus among hardcore players who pushed through the awkward onboarding phase – myself included – is that it’s fantastic. The gunplay, aesthetic, and presentation are among the best in the shooter genre. A great game doesn’t always equal an immediate hit, though, as shown by our estimates. Things are looking lukewarm right now. But this might be one of those marathon-not-a-sprint situations. Had to, didn’t I? Why wasn’t Marathon a hit on the same level as Arc Raiders? One topic that came up in a lot of conversations at GDC this year was why Marathon hasn’t hit the same stratosphere as Arc Raiders. On paper, they’re both extraction shooters, and Marathon has the Bungie pedigree – the house that built the gold standard for gunplay in Halo and Destiny. Marathon’s neon-futuristic aesthetic also distinguishes itself from the gritty realism of Tarkov or the post-apocalyptic hope of ARC Raiders. But vibes can only get you so far for first impressions if the onboarding feels like a brick wall. Marathon is a sweaty PvP-focused experience with a first-time user experience and UI that I can only describe as dreadful. Players are dropped into a complex ecosystem where the UI, though visually striking, is functionally uninformative, forcing users to manually hover over nondescript, identical icons just to identify basic gear or weapon mods. This lack of clarity is compounded by punishing mechanics like a severe heat gauge for movement and a scarcity of vital resources, all without a clear tutorial or a low-stakes mode to learn the ropes. Most people – even top streamers and veteran shooter players – have no idea what’s going on in Marathon at first. Arc is on the complete other end of the spectrum. As we covered here and here, Arc Raiders offers a more collaborative, approachable loop where players often work together toward shared goals. And the objectives are instantly clear. To many players, this contrast only emphasised Marathon’s issues, especially during the testing period. Players understand the Arc Raiders loop within 30 minutes, while Marathon acts as a massive filter, chewing up newcomers and spitting them out before they can experience the depth of Bungie’s signature gunplay. What I’m getting at here is that the poor first-time user experience of Marathon’s Server Slam likely stifled launch sales, while the opposite was true for Arc. Let’s look at the pre-launch copies sold for each game during their respective Server Slams (launch-aligned) : Looking at the trajectory: Arc Raiders saw a massive 80% jump in copies sold during its three-day Server Slam (day -13 to -11). Players jumped in, realised the water was fine, and immediately opened their wallets. Marathon, meanwhile, saw a 49% increase in the four days following its Slam (Day -7 to -3). At the time of each game’s respective launch, Arc Raiders had nearly double the Steam footprint of Marathon – and word of mouth only continued to grow. Bungie could have had more time to fix the onboarding process had the beta happened earlier. But Marathon launched three days after the beta finished. These factors limited the launch sales quite a bit, I reckon. Marathon has found a niche audience, though Despite the friction-heavy start, the data suggests that those who survived Marathon’s onboarding are loving life. We’ve been tracking cross-platform DAUs, and while there’s the expected post-launch leakage, many players are sticking with it. After peaking at 478K total DAUs on its first Saturday, Marathon has settled into a respectable rhythm, holding 345K DAUs as of yesterday and averaging 380K DAUs across the weekend. Steam continues to do the heavy lifting here, consistently accounting for the lion’s share of the daily players. Players have been putting in the hours, too: On Steam, Marathon’s average playtime has climbed to 27.8 hours, significantly outpacing the console averages on PS5 (16.5h) and Xbox (17.3h). Even more telling than the averages: 22% of the Steam audience has surged past the 50-hour mark, and nearly 7% have already logged over 100 hours. Subscribe for free to get the most accurate games estimates in your inbox twice a week 🫶 Subscribe This data suggests that once the Bungie magic clicks, it hooks players deeper than the average extraction shooter. There’s also started to be a shift in the game’s discourse. Marathon launched as one of those games that’s cool to hate. But as Marathon’s 100-hour club grows, we’re seeing conversations around its mechanical merit outweigh the negativity. Several high-profile creators, who were initially vocal critics, have spent the last week coming around on the mechanical depth of the endgame. It’s a subtle but positive signal; the hate train is losing steam, and a new narrative about the game is emerging. Bungie faithfuls unite Another interesting metric in Marathon’s first few weeks is who, exactly, is playing. Bungie leans heavily on its prestige as the “makers of Halo and Destiny,” in its marketing, and that message has clearly hit the mark. On Steam, the gravity (hammer) of Bungie’s previous work is unavoidable. A staggering 78.2% of Marathon players also played Destiny 2. The trend carries across other platforms, with 74.2% of PS5 players and 82.7% of Xbox players also having played Destiny 2. The Halo legacy lives on, it seems. More on that in a bit. While Destiny 2 went free to play, these numbers still represent a high-intent migration of a fanbase that trusts Bungie’s specific brand of kinetic gunplay and cryptic world-building. The Xbox data adds another layer of legacy. About 85.7% of Marathon players on Xbox have played Halo Infinite, while over half of the Steam audience has spent time in Halo Infinite and 36.1% in the Master Chief Collection (a paid collection of the old Bungie-made legacy games). Interestingly, we see a 55.9% overlap with ARC Raiders on Steam. Overlap is even higher there on PlayStation (60.5%) and Xbox (66.5%). And there’s also significant crossover with Helldivers 2 on all platforms, too. Subscribe for free to get the most accurate games estimates in your inbox twice a week 🫶 Subscribe Bungie has found some of its fans with Marathon, and the challenge now is keeping this engaged in a high-stakes PvP environment when they’ve spent the last decade primarily enjoying the power fantasies of PvE. On that note… Go the full 26 miles? Or cut and run? Time for some could’ve, should’ve, would’ve. These things would have improved Marathon’s performance at launch: A more robust onboarding process, perhaps in the form of a short single-player/PvE campaign. We know Bungie fans love this stuff. A traditional arena-based mode akin to Destiny’s Crucible could have been a bridge for the cautious players who’d have been otherwise deterred by the Server Slam. It’s also a great palate cleanser after getting merked. Introducing a dedicated PvE environment would have similarly diversified the conversation and lowered the barrier for the Bungie faithful who found the pure PvP extraction loop too abrasive. PvE is safer than PvP these days. There’s an argument that a thin PvE mode would have just felt like a budget Destiny, potentially hurting the brand more. But given how dire the FTUE is, I think it would have been a net positive. Any kind of tutorialised loop that demystifies the stakes, really. While there is merit in a studio sticking firmly to a singular creative vision, and going all in on the hardcore extraction loop. Less forgiving is the technical reality is that the user interface and first-time user experience (FTUE) were not at a commercial standard for launch. Subscribe for free to get the most accurate games estimates in your inbox twice a week 🫶 Subscribe In a landscape where player time is oversaturated and the most contested currency, a flawed FTUE is a critical failure point. But it’s not all doom and gloom, as Marathon has an incredible, unique gameplay loop, suggesting that financial success is still attainable if Bungie can pivot effectively. Bungie and PlayStation now face a difficult strategic crossroads, though – one within a challenging games market. They could: Double down on Marathon with a long-term Rainbow Six Siege- or No Man’s Sky-style recovery plan, which is something I heard Last Stand Media’s Chris Maldonado mention last week. While this could be a sunk-cost fallacy in action, it could eventually yield the audience the game’s mechanical depth deserves. Shift focus toward the inevitable Destiny 3 or another project, mitigating the escalating opportunity cost and cutting their losses, so to speak. Doing both is an expensive proposition, given the high overhead and burn rate of operating out of Bellevue, Washington. With Sony recently demonstrating a lower threshold for underperforming studios and projects, the margin for error has vanished. Whatever happens, the next six months will determine whether Marathon becomes a cornerstone of Sony’s live-service portfolio or a cautionary tale of vision exceeding accessibility. I’m hoping it’s the former, because Marathon rocks. As always, hit subscribe to get updates on Marathon and other relevant games. Subscribe Want to get your hands on our data for yourself – for free? We’re offering a free trial of our platform for games companies. Send us a message here, or reply to this email, and we’ll set you up. The last word Reply to this email – or reach out here – if you have any feedback for the newsletter – or want to request a game for us to cover. [Alinea Analytics boasts the most accurate PC and console estimates in the business. Game makers use our platform to understand their audience, keep an eye on the competition, monitor sales trends, and spot new opportunities. We equip game studios and financial institutions with accurate data and the confidence to make smarter, data-driven decisions. Want to talk about all things games market data? We’d love to chat!]
Health alert issued for ground beef sold in 5 states and DC
Federal regulators are asking consumers in five states and the District of Columbia to check their freezers for possibly contaminated ground beef.
A rare active volcano on Mars may be causing the whole planet to spin faster
Data from NASA's InSight mission suggests the Red Planet's Tharsis region is more active than previously thought and may be why Mars is spinning more quickly over time.
Russia turned cheap 'Molniya' strike drones into advanced recon tools
The modifications allow Russia to use these drones for battlefield reconnaissance instead of relying on more expensive platforms.
Mississippi health officer Dan Edney being considered for CDC director
Mississippi's State Health Officer Dan Edney is reportedly being considered for the director position at the CDC.
Fortnite Maker Epic Games Cuts About 1,000 Jobs Across Company
The company is seeing a downturn in engagement on Fortnite
Why Are Jenna Bush Hager & Sheinelle Jones Absent From ‘Today’?
Find out why cohosts were missing from studio on Tuesday, March 24.
Ford recalls more than 254,000 SUVs due to software issues
Ford is recalling more than 254,000 SUVs in the U.S. after a software defect was found to impact rearview cameras and key driver-assistance safety systems.
Public health alert issued for ground beef product; possible foreign material contamination
PORTSMOUTH, Va. (WAVY)– The U.S. Department of Agriculture’s Food Safety and Inspection Service (FSIS) has issued a public health alert for a ground beef product. Officials say the R…
Health alert issued for ground beef sold in Pennsylvania
(WHTM) — The U.S. Department of Agriculture’s Food Safety and Inspection Service (FSIS) has issued a public health alert for a ground beef product because it may be contaminated by a fo…
Iowa House passes restrictions on foreign involvement in health care, ballot issues
The Iowa House passed two measures Monday restricting foreign entities from health care ownership and ballot issue campaigns.
Republicans at Risk of Losing Latino Support Ahead of Midterms
The economy, inflation and immigration are the top issues for Latinos ahead of the US midterms.
Health Care Access for Women: The Cost of Being Dismissed, March 26
The event will feature a panel and table discussions focused on strategies for women to more effectively advocate for themselves in health care settings.
Blount: Online sports betting proposal has little support in Senate, would cost casino industry
Sen. David Blount, chairman of the Gaming Committee in the Senate, says a proposal to legalize online sports betting lacks support in the Senate, and could harm the state's casino tourism industry, which provides thousands of jobs and millions in state revenue. Blount also discusses proposed, and recently enacted, changes to the Public Employee Retirement System, and proposals to increase tax credits for private schools.
Public Health Alert For Ground Beef—‘Do Not Consume’
The U.S. Department of Agriculture’s Food Safety and Inspection Service issued a public health alert for certain ground beef products.
How Bans on Corporate Political Donations Influence Campaign Platforms
Julia Cagé, Caroline Le Pennec, and Elisa Mougin discuss their recent research on France’s 1995 ban on corporate contributions to political campaigns. The ban pushed candidates to de-emphasize local politics in favor of national issues and, in many cases, adopt more extreme rhetoric.
Special Battleground Report on Food and Health Part II: Messages
This Navigator Research report covers messaging guidance to effectively communicate on food and health-related issues to Americans in the battleground.
Ex-Liverpool boss Jurgen Klopp rubbishes Real Madrid links
Former Liverpool manager Jurgen Klopp has dismissed speculation linking him with the Real Madrid head coach job this summer.The German tactician branded the rumours nonsense as publications continue t...
India’s March private business activity slows to lowest since Oct 2022, missing forecasts
India's private-sector business activity, which had been on an upswing since the start of 2026, falters in March due to shockwaves from the Iran war
I spent 4 hours in line at the TSA, and the situation felt dangerous
A couple traveling to Costa Rica for their anniversary vacation spent four hours at the TSA, missed their flight, and spent the night at the airport.
Android Auto is breaking for Pixel and Samsung users, and no one knows why
Users are reporting connection issues associated with a recent update and an Android 16 security feature.
Ecological and demographic drivers of Oropouche virus transmission
Nature Health - Nationwide analysis of 30,086 confirmed Oropouche virus cases in Brazil between 2014 and 2025 shows that rural municipalities had over 11-fold-higher incidence than urban areas and...
Revolutionary Women: Lady Johnson, Angelica Schuyler and the Politics of Loyalty
State and territory commissions and other partners are hosting events across the nation to commemorate America's 250 anniversary in 2026.
A mission NASA might kill is still returning fascinating science from Jupiter
We can’t quite afford to support everything that we have done in the past."
Anthropic's Claude Can Now Control Your Computer
The developer is boosting Claude's agentic capabilities in an apparent effort to compete with platforms like OpenClaw.
S.F. public health boss: Hospital staff stopped stabbing, not sheriff
Daniel Tsai said in a private meeting that protocol failures led to a social worker's death, and contradicted sheriff's account of the incident.
Colorado Sen. Mike Weissman calls for cold water on heated hate speech
Likening the recent record-setting warm temperatures to hot political rhetoric, Colorado Sen. Mike Weissman, D-Aurora, pleaded for an end to death threats and other hate speech directed at lawmakers of both parties. “The increasingly tragic reality of our politics, however, like the increasingly tragic reality of our climate, is one of combustibility,” Weissman said from the well […]
Ottawa County Health Dept. issues new 'no body contact advisory' following sewage discharge
Takeaways from arguments in the Supreme Court case that could end grace periods for mail-in ballots
The Supreme Court’s conservative majority appeared dubious of state laws that allow the counting of mail ballots that arrive at election offices after Election Day as justices heard oral arguments in a challenge to Mississippi’s five-day grace period for mail ballots.
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Cheyenne Jackson performs "I'm Feeling Good" on Sunday evening, March 22, 2026, at "Un Salon Moderne à la Nouvelle-Orléans" at the gallery and private residence of Martine Chaisson in New
Trump administration adds State Health Officer Dr. Daniel Edney to short list of nominees for CDC director
State Health Officer Dr. Dan Edney is among the contenders to head the nation’s Centers for Disease Control and Prevention, the Washington Post reported
Mills, Collins on opposite sides of trans athlete issue
Collins, who is seeking a sixth term, posted on social media over the weekend that she’s held a “longstanding position that transgender athletes should not compete in girls’ and women’s athletics.”
SWOT Mission Unlocks a New View of Our Waterways
Explore how rivers move, change, and sustain life across the planet with SWOT data.
Cargo Headed to Station, Week Begins with Science Prep and Maintenance
A cargo spacecraft is in orbit catching up to the International Space Station for a docking tomorrow to deliver food and supplies to the Expedition 74 crew. Aboard the orbital lab, the seven residents kicked off the week with science operations prep, routine maintenance, and getting systems ready for a future spacewalk.
Southcoast Community’s Choice Awards business spotlight: Perfect Smiles Dentistry
Nominations for the SouthCoast Community's Choice Awards are rolling in! Don't miss your chance to recognize your favorite local businesses.
Purple Demonstration Reveals Critical Security Gaps and Invisible Threats in Standard Business WiFi
Manchester, LANCS, March 23, 2026 (GLOBE NEWSWIRE) -- Purple, the global leader in guest WiFi, has issued a call for heightened digital caution ...
Revolutionary Submarine Mysteriously Disappears Without a Trace – Scientists Are Now Preparing for a Bold Return
A pioneering robotic submarine that explored beneath Antarctica’s glaciers has been lost, but its discoveries are reshaping our understanding of ice melt as a more advanced successor is prepared to continue the mission.
Crab Nebula Expansion over 25 Years
These two Hubble images compare the Crab Nebula in 1999 to 2024, revealing its expansion over the years.
New ‘Crimson Desert’ Patch Fixes Storage, Combat, Controls, Bosses, Fast Travel
A new Crimson Desert patch has fixed many of the game's biggest issues not even a week after launch. They really transform the game.
Microsoft Exchange Online service change causes email access issues
Microsoft is working to address an ongoing service issue that has intermittently prevented some users from accessing their cloud-based Exchange Online mailboxes via Outlook mobile and Mac desktop clients since Thursday.
Trump visits Memphis to tout crime-fighting efforts as Iran war lingers
His talk on crime and immigration marks a return to an issue that he hopes will resonate with voters.
The debate over Trump’s mental health: ‘Malignant narcissist ’ or ‘superhuman president’?
While some warn of the danger of having someone suffering from ‘cognitive decline’ in the White House, his inner circle attributes his outbursts to his iconoclastic personality
Browns coach Todd Monken’s strong suit is blunt honesty without the politics
Monken's authenticity and commitment are strengths, said the Southern Miss AD who hired him for his only other head-coaching job in 2013.
Women’s health innovation is a huge opportunity Philadelphia is in danger of missing
A booming medical market is creating jobs, research and startup funding, and the region has the talent and institutions to become a national leader, a local entrepreneur writes.
Today's hefty Crimson Desert patch includes "beginning of improvements" to keyboard and mouse controls, plus much more
Pearl Abyss has detailed a rather chunky patch for Crimson Desert, after its launch last week was marred by multiple issues and AI controversies.
When Voters Worry About ‘Affordability,’ Many Point to Health Care
Democrats have had limited political success running on the Affordable Care Act, even with its relative popularity. Now President Trump’s health care cuts may have given the issue new resonance.
Ballard set to miss Northern Ireland's Italy play-off
Dan Ballard is set to miss Northern Ireland's crucial World Cup play-off semi-final against Italy on Thursday because of a hamstring injury.
Executive Director of SnoCo Sports to be Inducted to the Sports ETA Hall of Fame
Tammy Dunn, Executive Director of the SnoCo Sports Commission, is to be inducted into the Sports ETA Hall of Fame on April 22, 2026.
3 things to know about new 49ers punter Corliss Waitman
The San Francisco 49ers are replacing Thomas Morstead with Corliss Waitman. Let's get to know the team's new punter before he boots his first ball.
Microsoft: Removing some Copilots will improve Windows 11
: 'Doze boss admits OS needs smaller memory footprint, fixes for old issues like bad Bluetooth, more prominent WSL
Iranian Missile Strikes Are Costing Big Oil Billions in Lost Revenue
Damaged energy infrastructure is likely to take years to come back online, but a surge in oil-and-gas prices is helping to offset some of the lost production for now.
Joe Kent says he wants Donald Trump to hear MAGA opposition to Iran war
It’s a concerted effort, Kent said, to rally members of the president’s Make America Great Again movement and ensure he hears dissenting voices.
Art and science collide in alumna’s artwork
Juliet Fiss, an RIT imaging science alumna, uses algorithms and formulas to create artwork, including a piece at RIT’s Carlson Center.
Hackaday Links: March 22, 2026
On Friday, Reuters reported that Amazon is going to try to get into the smartphone game…again. The Fire Phone was perhaps Amazon’s biggest commercial misstep, and was only on the market…
Oil prices rise after Trump issues ultimatum and Iran threatens to close the Strait of Hormuz indefinitely
Oil prices rose Sunday after President Donald Trump threatened to “obliterate” Iran’s power plants if the Strait of Hormuz is not reopened by Monday evening.
Linux 7.0-rc5 Released: Linux 7.0 "Starting To Calm Down"
Linus Torvalds just issued Linux 7.0-rc5 as we inch toward the stable Linux 7.0 kernel release in April.
Women's March Madness live updates, scores: LSU makes history in NCAA tournament; Minnesota stuns Ole Miss to advance to Sweet 16
The FBI Just Issued A Warning About A Hidden Threat In Your Home Wi-Fi Network
The FBI is warning that criminals may hijack your home Wi-Fi through residential proxies, using your IP address to hide illegal online activity.
City of Paducah Finance Department to host informational workshop on Business License Renewals
In case you missed it, the City of Paducah Finance Department will host an informational workshop on Business License Renewals for local business owners at the McCracken County Library tomorrow,
Your Thymus and Your Healthspan
Our thymus gland plays a central role in the development or our immune system, specifically for supporting T cell development (how these cells got their name, maturation and differentiation in the thymus) and discriminating between self and foreign, non-self antigen proteins with production of dendritic cells. As we age, our thymus gland shrinks—the process known as involution—with progressive change from spongy to fatty tissue, with loss of functionality. But this process, with respect to timeline and extent, markedly varies from one person to the next. And to make things even more complicated, our thymus gland anatomy and precise location in the chest also is highly variable. So the famous Frank Netter diagrams from the 1960s (such as at left below) don’t capture the remarkable heterogeneity that a random set of 12 chest CT scans (below at right). What I consider as 2 landmark papers in Nature this week (here and here) used AI to quantify health of the thymus in 2 large cohorts, and then correlate the metric to a broad array of health outcomes. In this edition of Ground Truths, I’m going to cover three questions: (1) How was thymus health determined by AI?; (2) How is thymus health linked to key clinical outcomes? and (3) Are there ways we can promote a healthy (aka rejuvenate) thymus gland in our later years? Subscribe 1. How was thymus health determined by AI? This was accomplished by extensive work developing and validating an AI pipeline for 2 stages, the first for localization and segmentation of the thymus bed, and the second to quantify a digital marker, termed the thymic health score. There’s a lot to this algorithmic development, so I won’t go into all the details, but just provide a rudimentary outline of what was done. The 1st stage used supervised learning with 2 radiologists reviewing 2,461 chest CT scans. That work trained a 3D U-Net model to automatically identify the thymic bed’s 3D cropped region using center of mass coordinates, which reached 99.8% accuracy. The 2nd stage used a foundation model that was pre-trained with SwAV (which stands for Swapping Assignment between multiple Views), a self-supervised model, that generated a high-dimensional thymus representation of 4,096 features. That compares to the radiology reductionist and subjective scoring of 0 to 3 where 0 means the thymus is fully degenerated and fatty, and 3 is considered dense, intact glandular soft tissue. Notably, the self-supervised learning (SSL) performance was superior to supervised (AUC ~0.75 vs 0.55, respectively) reflecting the shallowness of the 0-3 classifier vs SSL’s holistic, self-taught AI. The thymic health score ranged from 0 to 100, with the highest number indexed to fully preserved thymic health. The algorithmic work extended to explainability with both Shapely value distribution, meaning the model was holistic not relying on any “magic” pixel, and occlusion sensitivity, demonstrating the model’s performance was not affected by ribs, sternum, lung tissue, but rather focused on the thymic bed directly. Below are a few saliency maps from the occlusion sensitivity that indicate the thymic bed focus, not affected by neighboring structures, using the jet color scale. Now the AI was ready for processing ~25,000 CT scans, each over 30 MB files, from the 2 large participant cohorts to provide a thymic health score, it did so in less than 14 hours, which is less than 2 seconds per scan! Share 2. How is thymus health linked to key clinical outcomes? The two cohorts were the National Lung Screening Trial, NLST (N=25,031) and the Framingham Heart Study, FHS (N=2,581) each with baseline demographics and long term follow up of >12 years for health outcomes. From the NSLT, you can see below that increased age and body-mass index were correlated to reduced thymic health. And, overall, men had reduced thymic health scores compared with women. There are a lot of graphs in the paper for outcomes, for both the NLST and FHS cohorts. To simplify the major outcomes, below is a composite Figure with striking reduction of all-cause mortality and for the different causes of death. The results were consistent between the 2 cohorts. For example, the cardiovascular mortality hazard ratio average was 0.57 in NLST and 0.38 in FHS (weighted to be 0.53 for the aggregate). The reduction of mortality also extended to digestive diseases and pulmonary disease (data not shown below). Lung cancer incidence was reduced by 36% for high vs low thymic health (Figure below, with a panel -incidence and b panel-mortality, adjusted for age, sex, BMI, smoking status). Notably, there was a smoker’s paradox: lower incidence and improved survival for lung cancer in smokers who had a high thymus health score. Smoking was associated with lower thymic scores whereas alcohol was not. Higher thymic health was linked to higher HDL cholesterol, lower triglycerides, lower fasting blood glucose, and lower systolic and diastolic blood pressure. Inflammation biomarkers, such as C-reactive protein and interleukin-6, were elevated in the people with lower thymic health scores. In their second paper, the same team looked at the relationship between thymic score and outcomes for 3,476 patients receiving cancer immunotherapy. The non-small cell lung cancer progression-free survival was reduced in patients with low thymic health score. A parallel relationship for survival was seen for other types of cancer including melanoma, breast, and kidney with a 44% lower risk among high thymic scores (Figure). A similar pattern was seen with different immune checkpoint inhibitors. The thymus health score outperformed programmed death ligand-1 (PD-L1)and tumor mutation burden (TMB) assay of the tumor and was an independent prognostic marker of progression-free survival. In this dataset, a direct connect with thymus score and adaptive immune function was noted with a correlation before cancer treatment for both T-cell diversity and thymus T-cell production (a metric known as T cell receptor excision circles). Thymus Removal Study There is a highly relevant citation about thymus function before moving onto ways to rejuvenate it. In 2023, a very important study of thymus removal during cardiothoracic surgery was published, with 1146 patients undergoing thymus removal vs 1146 matched controls (mean age 55 years). The adverse outcomes for thymus removal were striking, with a 2.9 higher risk of all-cause mortality and doubling of cancer incidence, 1.5 fold increase in cancer mortality, and 1.5-fold increase in autoimmune diseases. The immune function showed marked compromise after thymus removal, as reflected by CD4+ and CD8+ T cells (Figure below) Share Ground Truths 3. Are there ways we can promote a healthy (aka rejuvenate) thymus gland in our later years? In recent months we’ve learned a lot about the process of thymus involution and the pathways by which this may be modulated. Thymus involution is primarily due to loss to thymus epithelial cells (TECs) and there are 2 subtypes with different functions: the cortical, responsible for positive selection of T cells, and the medullary, for negative selection. When adipose tissue infiltrates the thymus, thymic adipocytes are pro-inflammatory, knocking out T-cell output. Likewise, systemic inflammation, or “inflammaging,” from smoking, obesity, and chronic stress promote thymic adipocytes. Now, from preclinical studies, we know about key pathways that account for these processes. Historically, back in 2014, FOXN1 was recognized as a single master transcription factor essential for TEC function, with studies in mice with forced FOXN1 upregulation leading to thymus regeneration. That laid the foundation for potential regrowth of quiescent thymus cells. It took awhile to find pathways to accomplish this goal and to even refute its role as the master regulator. The Liver-Thymus Axis Feng Zhang and his team recently showed that injection of an mRNA vaccine to the liver encoding DLL1, IL-7 and FLT3-L in combination, factors known to support thymopoiesis (Figure), successfully enhanced immune function in aged mice. However, the effect was transient. The FGF21 Story Two reports in 2025 addressed the thymus gland’s production of FGF21, a growth factor (fibroblast growth factor 21) and its control of thymus involution. This growth factor is also produced by the liver, but it doesn’t have impact on the thymus in aged rodent models. In contrast, The liver’s hepatocyte growth factor (HGF) has been shown to reverse senescent TEC structural changes. Growth hormone stimulates production of insulin growth factor-1 (IGF-1) in the liver and the thymus. Two small studies in human participants (TRIIM, for Thymus Regeneration, Immunorestoration, and Insulin Mitigation) of 6 and 50 people, respectively, treated with combined human growth hormone, metformin and DHEA, suggested the potential of slowing epigenetic aging and improving thymus mass and function. But the combination of drugs, small sample, and lack of controls make conclusions murky. Increased thymus FGF21 led to increased CD8 T cells in old mice and extended healthspan and improved physical performance. Building on the previous FOXN1 data, ablation of β-klotho, the obligatory co-receptor for FOXN1, accelerated thymic aging. The benefit to FGF21 was confirmed in a companion paper using an FGF21 knock-in mouse model showing thymus enlargement and increased TECs throughout the lifespan. (schematic Figure below). The accompanying editorial for these 2 papers speculated: “The proposed link between age-associated thymus involution and organismal aging is intriguing, and suggests we might seek to achieve systemic rejuvenation by counteracting thymic involution.” Other Factors Lessons from the Axolotl (Mexican Salamander) In an elegant set of experiments of the axolotl (Figure), known for its complete thymus regeneration after total surgical removal, mediators were identified. Surprisingly FOXN1 was dispensable. But midkine, a growth factor, appeared to be the driver, the initiator of thymus cell growth, survival, and repair. Other components that contributed were Postn+ (periostin-expressing mesenchymal niches) and Ccl19, a chemokine protein from the bloodstream. RANK and RANKL RANK (receptor activator of nuclear factor κB its ligand (RANKL) have been considered key regulators of medullary TECs. In a study of both aged mice and human thymus cell cultures, their key role was confirmed, with multiple benefits of resorting TEC function, recruitment of progenitor cells, and T cell development. Subscribe Summing Up This body of work strongly supports the health of the thymus gland as a critical regulator of human healthspan, not just a correlate or link. The new landmark studies are reinforced by the regenerative biology experimental models that have shown, via an array of mediators, that healthspan of aged mice is at least in part dependent on thymus gland function and its critical role for maintaining adaptive immunity. It sure seems that we’d be better off having an immune reservoir of naive T cells instead of a profile in older adults of exhausted, low quality, memory T cells, with a senescent phenotype. It is striking that we ignored the importance of the thymus gland for many decades. A wake-up call was the results of the thymectomy matched control study reviewed here, with the opposite of high thymic health score improved health outcomes. The convergence of AI and healthspan here is notable. The exceptional and laborious work for developing and validating (no less explaining) the AI to quantify thymus health set the foundation for probing the connect the major health outcomes in two cohorts with extensive follow-up. We’ve never had a way to meaningfully quantify the thymus gland before, so this represents important leverage of supervised, self-supervised, and transformer models. The study wouldn’t have been possible without AI. And it begs the question as to whether there are ways we can maintain our thymus at a high health score. But it’s not so simple to rejuvenate our thymus. There are multiple risks including the induction of autoimmunity, increasing the risk of cancer, and inducing a pro-inflammatory state. For example, factors that increase TEC proliferation could compromise the medulllary negative selection process and leak out auto-reactive (self-attacking) T cells. Thymic cells could be induced to proliferate, but we know, for example, that growth hormone and IGF-1 are associated with an increase risk of cancer. If thymus rejuvenation doesn’t clear out the accumulated senescent cells in older adults, then inflammation within the gland could block the production of TECs. Keeping these risks in mind, we now have identified many ways to keep our thymus healthy as we age that undoubtedly will be tested in clinical trials going forward. Ultimately, the benefit-to-risk tradeoffs will be defined. In the meantime, we have desperately needed an immunome. As I’ve stressed in multiple prior Ground Truths, we have no test in the clinic to assess a patient’s immune status! It was very encouraging for me to get an email from Hugo Aerts, the senior author of the landmark papers in the days after they were published: “I also wanted to say that your Substack on “Why We Need an Immunome” was inspiring for this work. We found it a very compelling perspective and greatly enjoyed reading it.” Just having an assessment of a person’s immune status via a chest CT scan, with millions of these performed per year, might help in guiding the right immunotherapy for cancer (e.g. more intensive, combinations for those with low thymic health scores) and help define people who are increased risk for age-related diseases of cancer, cardiovascular, and neurodegenerative. The main theme of Super Agers is that we now have many layers of data (genetics, proteins, biomarkers, organ clocks that can be integrated via multimodal AI) for us to define a person’s specific risk decades before one of these age-related diseases leads to symptoms, enabling prevention. From the new studies this week, we can add thymus health score as yet another way to understand a person’s risk, a window into their adaptive immune system and healthspan. And perhaps someday we will be able to safely rejuvenate the thymus, or maintain its health through one’s life, and use the thymus health score to monitor. NB: I wrote this post (No A.I.) A Quick Poll Loading... ********************************************************************* Thanks to Ground Truths subscribers (now > 200,000) from every US state and 212 countries. Your subscription to these free essays and podcasts makes my work in putting them together worthwhile. Please join! If you found this interesting PLEASE share it! Share Ground Truths Paid subscriptions are voluntary and all proceeds from them go to support Scripps Research. They do allow for posting comments and questions, which I do my best to respond to. Please don’t hesitate to post comments and give me feedback. Let me know topics that you would like to see covered. Leave a comment Many thanks to those who have contributed—they have greatly helped fund our summer internship programs for the past two years. It enabled us to accept and support 47 summer interns in 2025! We aim to accept even more of the several thousand who will apply for summer 2026.
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