Your thumb is about the same size as your nose.
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In one day, adult lungs move about 10,000 litres of air.
11
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
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
Early American humans hunted car-size armadillos and used their shells for houses.
12
The human brain has the capacity to store everything that you experience.
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