An asteroid about as long as the Great Pyramid of Giza is tall will make a "close" approach with Earth on Sunday (July 25), according to NASA calculations.

An autoimmune disorder was the culprit.

Some theories point toward a natural origin and others claim the virus accidentally leaked from a lab.

Acclaimed horror director Eli Roth has a new documentary on a horrific subject: the shark finning trade.

Researchers have documented chimpanzees killing gorillas for the first time. The two fatal attacks were caught on film at a national park in Gabon, Central Africa.

Here's why nuclear bomb explosions lead to a mushroom-shape cloud.

People have described extraterrestrial encounters that take place in a dreamlike state, and experiments suggest that such experiences may be lucid dreams.

Fascism is a political ideology usually characterized by authoritarianism and nationalism. However, many scholars say the concept is difficult to define.

Humans are slow and weak compared with bears, pumas and other large predators, but these beasts usually avoid us. Why don't these animals try to eat us more often?

Originally built to speed up calculations, a machine-learning system is now making shocking progress at the frontiers of experimental quantum physics

Large telecommunication satellites used for TV broadcasting could be quickly and easily repurposed as anti-asteroid weapons according to European aerospace company Airbus.