A cubic yard of air weighs about 2 pounds at sea level.
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In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
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Nearly 50% of the world's scientists are assigned to military projects.
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There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
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Iron weighs more after it rusts.
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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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During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
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