The oldest fossilised remains of complex animals appear suddenly in the fossil record, and as if from nowhere, in rocks that are 538 million years old.

LANSING, Mich. — State Rep. Matt Longjohn announced his reelection campaign Tuesday. The Democrat currently represents the ...

Researchers discovered that a poison frog species described decades ago was based on a mix-up involving the wrong museum ...

About 5,000 people have died of the flu so far this season, including 9 children, as the Trump administration pulls back on ...