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Shipwrecks can reveal information about traded goods and even which rituals people partook in centuries ago. Here's a look at shipwrecks from ancient times found around the world.

Artists and scientists have been creating optical illusions for centuries. Here are 32 mind-bending examples that prove you can't always trust what your eyes are telling you.

Auroras (also called the northern and southern lights) are visible from the ground after powerful solar storms, but these natural light shows look even more majestic from above. Here are 32 spectacular photos of auroras taken from space.

Artificial Intelligence (AI) is set to improve the world for many — but others may lose out.

Parasites can cause a wide range of diseases in humans, ranging from short-term to lifelong.

From planets and moons in our solar system to dying stars and parallel universes, here are some of the far-out places scientists are searching for alien life.

Birds are some of the most colorful animals on Earth, with a palette of rainbow tones to feast your eyes on. Here are our picks for some of our most flamboyant feathered friends.

We've seen many big hitters capture our imagination, alongside a handful of oddities and misfits that were less successful.

Countdown Until the end of the last ice age, American cheetahs, enormous armadillolike creatures and giant sloths called North America home. But it's long puzzled scientists why these animals went extinct about 10,000 years ago.

Lasers have helped uncover ancient human-made structures the world over.