The curious minds at What If transport us to the Paleozoic Era and envision what life would be like in this ancient period.

The growth of vast forests removed significant amounts of carbon dioxide, resulting in atmospheric oxygen levels potentially ...

CAPE CANAVERAL, Fla. (AP) — A Soviet-era spacecraft meant to land on Venus in the 1970s is expected to soon plunge uncontrolled back to Earth. It’s too early to know where the half-ton mass of ...