A vast archive of more than 1,000 hours of 9/11 footage is being donated to the New York Public Library. Filmmakers who ...

NASA's Mars rover Perseverance has uncovered rocks in a dry river channel that may hold potential signs of ancient ...

First, gravitational waves proved Einstein correct. Now, they’ve confirmed Stephen Hawking was right about black holes.

We know the dinosaurs of the Mesozoic era and the woolly mammoths of the ice age. But what about the millions of years in ...