A few fossilized body parts hinted at an enigmatic bird's close ties to waterfowl like ducks and geese. A newfound skull may bolster that idea.

Sixty-six million years ago, at the end of the Cretaceous Period, an asteroid impact near the Yucatán Peninsula of Mexico ...

In the long and storied history of earth, there have been five mass extinctions, the most famous, of course, being the ...

Earth’s history is marked by periods of immense destruction, where vast numbers of species vanished in a short time. These ...