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3 Mar 2007
Fact of the day
Radiation can be observed or detected by using Geiger counters, photographic plates, cloud or bubble chambers.
Random Facts
In 1992, the U.S. Fish and Wildlife Service listed the Louisiana black bear as a threatened species under the Endangered Species Act, meaning it could become in danger of extinction throughout all or a significant portion of its range in the foreseeable future.
Most elephants weigh less than the tongue of a blue whale.
Few people survive if more then 70% of the body surface is affected by full thickness burns. But medical advances mean that survival is more likely now - although victims will be horribly scarred and in need of plastic surgery.
Open pan salt production was still in use in Britain, in Cheshire, as late as 1986.
It was Alfred Wegener, an astronomer and explorer who argued that the continents wandered about the globe. The new Earth conceived by Wegener was half a century ahead of its time. He published his major work describing continental drift in 1915; it was the mid-'60s before geologists generally realized that he was, in essence, right.
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According to a survey of American men by Dr. Alfred C. Kinsey in the 1940's, nearly one in five of those raised on farms claimed that at least once in their lives they had copulated with livestock.
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During winter, the skating rinks in Moscow cover more than 250,000 square metres of land.
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To escape the Earth's gravity a rocket need to travel at 7 miles a second.
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A scorpion has hair on its pincers that can detect air moving at speeds as low as 0.072 km/h.
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When the mummified body of Lady Dai was discovered (deceased around 145-178 BC) the blood in her veins was still red, her skin was still supple and her limbs could be manipulated.
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The oldest known hominid skeleton from Ethiopia has been dated at 4.4 million years.
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The concept of matter as a collection of small indivisible particles called 'atoms' probably originated with Democritus in the 5th Century BC, but it was not generally accepted until the 19th Century.
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The oldest mentioning of something resembling a pencil was by Philip of Thesalonica, a Greek poet who lived around 20 B.C. He described the use of writing tools made of lead in disc-shaped pieces.
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We now know that other planets have rings, but Saturn's are the only ones that are visible from Earth even with a small telescope.
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