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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One cubic foot of gold weighs more than 1,200 pounds!
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Balsa wood is classified as a hard wood!
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The average home creates more pollution than does the average car.
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Sound travels fifteen times faster through steel than through air.
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The storage capacity of human brain exceeds 4 Terrabytes.
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A cubic yard of air weighs about 2 pounds at sea level.
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