Penguins lost their ability to fly millions of years ago. A new study shows that

We think all the time, but what we don’t do is think entirely inside our

Forests currently cover approximately 30% of the Earth’s land surface.

A cave called Wonderwerk Cave in South Africa may be the site of the world’s

Ancient Egyptians believed that life existed beyond the one they lived on Earth.

The medical condition for sweaty palms is known as palmar hyperhidrosis. It is the result

All mammals have two sets of teeth—milk teeth and permanent teeth.

Heavy metals include elements like lead, mercury and cadmium. These metals occur naturally and are

For centuries, mushrooms have been thought to have special powers and have been pegged as

Turbulence is relatively common and usually harmless, but it can also be uncomfortable mid-air.