One cubic foot of gold weighs more than 1,200 pounds!
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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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Research indicates that plants grow healthier when they are stroked.
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The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
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Cold water weighs more than hot water.
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When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
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