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Volatile organic compounds (VOCs) are gaseous chemicals that are emitted by various household items, as well as natural sources.

Almost everything you know about the famous Fibonacci sequence is wrong.

The nuclear bombs dropped on Hiroshima and Nagasaki at the end of WWII left shadows of people on the ground and buildings. Here's why.

Polycystic ovary syndrome: Symptoms and treatment

The woolly mammoth, a cousin of today's elephants, died out about 10,000 years ago. It may be possible to bring them back by cloning, but should we?

Auroras can generate some truly spectacular images, but what's the best way to photograph the northern lights?

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.

From the humble trillion to Graham's number, here are some of the most massive numbers ever conceived by humans.