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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Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
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One cubic foot of gold weighs more than 1,200 pounds!
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The hair of an adult man or woman can stretch 25 percent of its length without breaking.
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If the chemical sodium is dropped into water it will immediately and violently explode.
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Sound travels fifteen times faster through steel than through air.
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According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
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