The Harvard astrophysicist has devoted years—and thousands of interviews—to the idea that mysterious objects streaking ...

Moon bases, living to 100 and (finally!) flying cars. What 2076 and our future will look like may be stranger than we expect.

Italy is putting on display one of the best known examples of Etruscan painting. The frescoes come from an ancient tomb that ...

Billions of years ago, asteroids hitting Earth deposited metals crucial to technological advancement. Could we find even more of these metals by mining asteroids in space? Learn more in this clip from ...