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Hello,everyon [00:06.56]Today,we'll talk about another planet,Mar [00:24.76]Mars is one of the planets in the solar syste [00:40.96]It is the forth planet from the su [00:54.54]It is named for the Roman god of wa [01:09.28]because it appears fairly r

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EXPLORATIONS - Days of Apollo: Collecting Rocks, and Making History, on the MoonBy Marilyn Rice Christiano Broadcast: Wednesday, September 06, 2006 ANNOUNCER: EXPLORATIONS -- a program in Special Engl

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When summer hits, I dread jogging outside. But a study finds that elephants can be in true danger in the heat. As creatures get bigger, they have smaller surface area to body volumn ratios. Fully-grown Asian eleplants thus pack a lot of mass into a b

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Li Weiqi, a 40-year-old auxiliary traffic police officer from Hangzhou's West Lake detachment of the Traffic Management Bureau, said he noticed something weird about the road surface of the intersection where he was on duty on April 21. When I walked

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By bending arms and legs or angling her bodypresenting more or less surface area to the groundshe can change her rate of fall, slowing or speeding up her terminal velocity around ten or twenty miles per hour. To fall as fast as two hundred miles per

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