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A tornado is the most violent storm on Earth. Warm, wet air collides with cool, dry air and spins faster and faster. It finally twists down to the ground.
Watch the range of destruction caused by the weakest tornadoes up through the most damaging. Then find out how scientists monitor and track these developing storms.
Named after their “Old World” home, Old World monkeys roam Asia, Africa, and a small part of Europe. Baboons, mandrills, macaques, and more than 70 species belong to this diverse group. Their Asian primate cousin, the gibbon, is famous for brachiating through the jungle, living in monogamous family groups, and singing.
Explore these amazing primates and listen to their calls and songs.
What are you made of? Would you be surprised to find out you're mostly water?
Along with a lot of H2O, the human body also contains carbon, calcium, nitrogen, and phosphorus. Plus there are lots of trace elements, too. Learn more about the chemistry of the human body.
Look at your hand, your computer, a wall. Does it seem solid? Actually, it’s 99.99% nothing. Just empty space.
To understand how this can be, you have to understand the structure of atoms, the building blocks of matter. The sites here will help you do that — and show you how people could map out something so small you have to magnify it over 100 million times to see it.
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