Scientists Find Similarities Between Modern Climate And 'Great Dying' 252 Million Years Ago Scientists warned in a study that the world is recreating the same conditions that wiped out the majority of life on Earth 252 million years ago. Rising global temperatures and depleting oxygen in the ocean could cause the next mass extinction. by Diane Samson
Science Fossil Of 'Mother Of All Lizards' Reveals Reptile Group Squamate Survived Permian-Triassic Mass Extinction by Allan Adamson