Because heat expands the metal, the Eiffel Tower always leans away from the sun.
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In zero gravity, a candle's flame is round and blue.
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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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If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
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Scientists are working on a portable spray-on-skin that can heal severe wounds in just a few minutes.The spray mainly contains important proteins that can reprogram the injured cells to become stem cells, and back to young uniformed skin cells. So far they were able to accelerate healing process from 12 weeks to 21 days with a similar approach.
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The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
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Termites are being researched as a possible renewable energy source as they can produce up to 2 litres of hydrogen from ingesting a single sheet of paper, making them one of the planet’s most efficient bioreactors.
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