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
The human eye blinks an average of 4,200,000 times a year.
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The human sigh acts as a physiological reset button.
23
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
We share 70% of our DNA with a slug.
218
If your DNA was stretched out it would reach to the moon 6,000 times.
256
In one day, adult lungs move about 10,000 litres of air.
11
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252