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.
21
Recently, archaeologists excavating in the old medieval town of Odense in Denmark uncovered 700-year-old barrels of poop - and, to their surprise, they still smelt.
11
In 1958, a nuclear bomb was lost somewhere along the swampy coast of Georgia. Its whereabouts remain a mystery to this day.
29
The last time American Green cards were actually green was 1964.
60
The ancient Egyptians thought the function of the brain was to produce snot.
16
Grenades were invented in China over 1,000 years ago.
50
Napoleon constructed his battle plans in a sandbox.
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