Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
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Jericho is the oldest walled city in the world at 9,000 yrs old!
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There are 92 known cases of nuclear bombs lost at sea.
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A baboon called Jackie became a private in the South African army in World War I.
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Leonardo Da Vinci predicted the mass use of solar energy as long ago as 1447.
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In 1999, Pepsi, Inc. paid $0.00 in income tax!
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No one knows who designed the first American Flag.
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