Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Only humans shed emotional tears.
331
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
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
On average a woman has 4 sexual partners in her lifetime.
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It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14