With its glaciers and sub-zero temperatures, Antarctica hardly seems like a place of refuge. However, the now icy continent ...

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 ...

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