No one knows how many people died during the sinking of the Titanic.
11
In 1958, a nuclear bomb was lost somewhere along the swampy coast of Georgia. Its whereabouts remain a mystery to this day.
29
Ancient Romans at one time used human urine as an ingredient in their toothpaste.
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The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
The life expectancy in 1900 was just 47 years.
49
Che Guevara suffered from asthma!
9
Leonardo Da Vinci made a robotic lion in 1515 that would walk, sway, open its mouth and move its tail - it even had a compartment that opened to present flowers.
22