Scientists uncovered a bizarre crocodile cousin from 215 million years ago that started life walking on all fours, then changed its entire stance as it grew — by adulthood it was standing upright and striding around on two legs
In 1996, Columbia scientists shifted Biosphere 2’s 2.6-million-gallon Arizona ocean between ice age, modern and future CO₂ every 3 months; future chemistry cut coral calcification by about 40%