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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If the human eye was a digital camera, it would have 576 megapixels.
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The human body contains over a billion miles of DNA.
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Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
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Babies crawl an average of 200m a day.
212
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
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You forget 90% of your dreams.
256
Early American humans hunted car-size armadillos and used their shells for houses.
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