Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
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In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
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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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The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
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One third of the electricity produced on earth is used to power electric light bulbs!
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Scientists are attempting to create a synthetic brain by reverse-engineering the mammalian brain down to the molecular level. A cellular human brain is predicted possible by 2023. It hopes to shed light on consciousness.
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The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
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Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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