If you could remove all of your skin, it would weigh up to 5 pounds.
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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).
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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.
A goanna at Grey Gum picnic area at Mount Coot-tha, Queensland, Australia
The blow of a blue whale
Blue Whale
Complete the table by dragging the white labels to the gray targets, the blue la