Earth looked much different not just millions, but even decades and centuries ago. Many animal species that once existed are nowhere to be found. From human activity to climate change, new animals ...

In school, we learned about the asteroid that wiped out an estimated 76% of all creatures. Scientists now call this the fifth ...

Lazarus taxa, where a species is declared extinct but later learned to be alive and kicking, is the reason people think the ...

The late 1900s were a time of rapid change for our planet, and unfortunately, some of its most unique inhabitants did not survive. Between the 1980s and 1990s, several animal species disappeared ...

Most of the large animals that have walked the surface of Earth are no longer here. Why? Dan Mann thinks it’s because our recent climate has been too stable, at least when compared to the wacky ups ...

Add Yahoo as a preferred source to see more of our stories on Google. Some extinct mammals from Australia's Mammoth Cave included (from left) a giant long-nosed echidna, a short-faced kangaroo, a ...

England’s “green and pleasant land” is set to be transformed in the next 60 years as rising temperatures and other human ...

In 1991, botanists Calaway Dodson and Alwyn Gentry advanced a striking proposition. Surveying a rapidly deforested ridge in western Ecuador, they suggested that dozens of plant species known only from ...

A butterfly once declared extinct in the UK has made a remarkable return, first sighted in an Isle of Wight garden.

(CNN) — Recent analysis of two fossils from Australia, estimated to be about 50,000 years old, suggests that Australia’s First Peoples valued big animals for their fossils as well as for their meat, ...