For millions of years, large herbivores like mastodons and giant deer shaped the Earth's ecosystems, which astonishingly ...

Many causes can contribute to the extinction of a species. Luckily, these animals once thought on the brink of extinction are ...

A chilling new assessment suggests our planet is hurtling towards an unprecedented loss of life, with human activity squarely ...

Big animals of the ocean go about their days mostly hidden from view. Scientists know these marine megafauna—such as whales, ...

From the vanishing of 10 billion snow crabs in Alaska's Bering Sea to the first mammal officially declared extinct due to ...