However, all of this should serve as a reminder that very few things remain unchanged for long on planet Earth. A mere 90 million years ago, Antarctica was a radically different place. Instead of ...

Although the Earth’s been decidedly blue for 600 million years, rising populations of phytoplankton caused by rising ...

As Earth approaches warmer levels experienced earlier in its geologic history, it may be bad news for human survival.

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.