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 75-watt bulb gives more light than three 25-watt bulbs.
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Brass doorknobs automatically disinfect themselves in about 8 hours.
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German chemists made a replica of a trophy the size of one molecule.
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One cubic foot of gold weighs more than 1,200 pounds!
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Indoor pollution is 10 times more toxic than outdoor pollution.
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The smell of freshly cut grass is actually a plant distress call.
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A cubic yard of air weighs about 2 pounds at sea level.
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