An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
    243
    A Russian man who wore a beard during the time of Peter the Great had to pay a special tax.
    96
    Babies are born without knee caps.
    78
    Oak trees do not have acorns until they are fifty years old or older.
    155
    The water of the Antarctica is so cold that nothing can rot there.
    333
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