Toxic air can take an unexpected toll on physical and mental health.
Between Oct. 27 and Oct. 29, 2017, an archaeological team took nearly 6,000 photographs of ancient stone structures and other types of archaeological sites in Saudi Arabia.
NASA's Operation IceBridge continues to snap gorgeous images of the planet's chilly bottom, revealing the beauty and dynamics of Antarctica's expansive ice.
From a close-up of a tardigrade embryo, to an aerial of Antarctic "ice cubes," to a pensive polar bear, winning photographs in Royal Society competition will amaze you.
Archaeologists have created a 3D digital model of a sea cave in Scotland where bodies were left to rot in the Bronze Age.
A diving team has discovered the remains of an underwater castle, or fortress, beneath Lake Van in Turkey.
From the Antikythera, which held what may be the oldest computer, to a treasure-filled vessel, these shipwrecks are obscured not only by ocean waves, but by mysterious circumstances.
Area 51. The name conjures an aura of secrecy, mystery, and of course, extraterrestrial happenings. Here's a look at some of the strangest facts about the spot.
Traditional Halloween creatures — vampires, werewolves and killer clowns — may give you the shivers, but these mythic monsters from around the world are truly terrifying nightmare fuel.
For doctors, trying to figure out whether a person has a parasitic infection is like solving a mystery with few clues or only vague ones.
Injuries to eyeballs might make you want to squirm and cover your eyes, but these icky accidents and odd occurrences can also be illuminating.
Heart disease is one of the leading causes of death in the United States, but it doesn't have to be.
Images reveal sprawling stone structures in Saudi Arabia that look like field gates from above and that may date back thousands of years.
Androids are a mainstay of science fiction, compelling audiences to question how we define what makes us human.
There's often more to a picture than meets the eye, and many of the world's most famous artworks have secrets hidden beneath the surface.
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