The first semi-permanent settlements appeared in Florida around 5000 B.C.
10
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
When Charles Darwin first discovered the Galapagos Tortoises, he tried to ride them!
18
The Mint once considered producing doughnut-shaped coins!
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Although Nostradamus died in the middle of 1566, his 1567 almanac was published because he had the foresight to prepare it before his death.
19
Approximately 25,000 workers died during the building of the Panama Canal, and approximately 20,000 of them contracted malaria and yellow fever.
14
No one knows who designed the first American Flag.
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