The 'killer' caused mass extinction 250 million years ago
Canadian scientists have discovered one of the perpetrators of mass extinction on Earth 250 million years ago is mercury.Mammal ancestors take advantage of extinction events
The closest ancient relatives of the mammal species not only survived the mass extinction event 252 million years ago, but also flourished and flourished later.Perspective of mass extinction like dinosaurs
The world is precarious in the brink of mass extinction, and humans have accelerated the disappearance of organisms by 10,000 times.