The Earth's atmosphere weighs about 5.5 quadrillion tons.
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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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Out of all the senses, smell is most closely linked to memory.
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One third of the electricity produced on earth is used to power electric light bulbs!
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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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Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
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In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
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There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
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