At a event in Washington D.C., A U.S. official said a remote earthquake in 2020 was caused by a Chinese nuclear test.

A stunning “ring of fire” eclipse was totally visible to a lucky few in the Southern Hemisphere. Here’s how to see the next one ...

Six months later, workers remain rattled and community concerns about air pollution from the plant are heightened.

In the 1930s, the Switzer brothers stumbled onto a way to mimic fluorescence. That led to Day-Glo, which has been making the world a brighter place ever since ...