Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
A scorpion can hold its breath for up to 6 days.
19
A comet's tail always points away from the sun.
2
Scientists in Germany have developed a candy that doesn't cause cavities.
11
Chewing gum boosts your brain power.
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