Add Yahoo as a preferred source to see more of our stories on Google. Even bivalves looked different during the time of the dinosaurs, as these fossils of an ultra-fortified oyster, left, and armored ...

Add Yahoo as a preferred source to see more of our stories on Google. Chinook Salmon Spawning in Snake River In this undated photo, Chinook salmon spawn in Snake River. (Natalie Fobes/Getty Images) I ...

In the last ten years, at least 15 species have officially checked out, never to be seen again. It's ironic to think how these creatures once roamed the planet with us, but now, they're just part of ...

Geologist Keller debuts with a scathing and illuminating examination of scientific research into what caused the demise of the dinosaurs. She notes that for years, much of the scientific community and ...

About 66 million years ago – perhaps on a downright unlucky day in May – an asteroid smashed into our planet. The fallout was immediate and severe. Evidence shows that about 70% of species went ...