There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
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When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
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The largest cell in the human body is the female egg and the smallest is the male sperm.
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A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
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Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
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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!
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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.
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Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
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