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Did you know?
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.