Hundreds of species have gone extinct in recent centuries, but losses are few among larger classification levels, meaning we are not witnessing a mass extinction just yet, according to a study ...

Add Yahoo as a preferred source to see more of our stories on Google. A skeleton of a Dodo. - Kirsty Wigglesworth/AP Humans have wiped out hundreds of species — with many more on the brink or ...

A fire-bellied newt (Cynops ensicauda) photographed on Amami Island (Japan). A recent study suggested that the extinction of this and other genera was part of a mass extinction event that threatens ...

Across 450 million years of Earth’s history, life has repeatedly surged and collapsed in dramatic waves, leaving behind mass extinction events that reshaped the planet’s biosphere. A new theoretical ...

Humans have wiped out hundreds of species — with many more on the brink or experiencing large declines in population. Some scientists have argued that we have entered a “sixth mass extinction” event ...