Last week's meteorite impact: cosmic coincidence, or a sign of the Mayan apocalypse? Brush up on the nuttiest theories floating around the Web.
Inventor claims breakthroughs come to him under self-induced hypnosis
But it was still notable for its size, and its well-recorded demise in the atmosphere.
The lake has been isolated and buried for 14 million years
And particle accelerators, and four-dimensional space, and a bunch of other cool stuff. Just watch these videos.
More Military-Civillian Technology Fisticuffs: Who's Got The Edge?
Whoâ€™s got the edge?
Bad boys bad boys, whatcha gonna do?
New Military Channel program showcases the latest tech designed by the U.S. military.
A gas-powered robotic uniform inches closer to the battlefield.
Popular Science's editor-in-chief stars in a new National Geographic show.
Our editors scrounged up some truly bizarre facts.
It literally broke the scale.
The Chelyabinsk meteorite came from a well-known family of Earth-crossing space rocks known as the Apollo asteroids.
In Russia's Far East, one of the world's most active volcanoes creates a striking scene.