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.
15
One 75-watt bulb gives more light than three 25-watt bulbs.
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Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
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Pumice is the only rock that floats on water.
14
Out of all the senses, smell is most closely linked to memory.
146
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
At room temperature, the average air molecule travels at the speed of a rifle bullet.
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