The adult human brain weighs about 3 pounds (1,300-1,400 g).
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By weight, Bone is five times stronger than steel.
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
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There are about 255 babies born worldwide every minute.
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In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
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Our eyes are always the same size from birth, but our nose and ears never stop growing.
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An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
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