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!
21
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Research indicates that plants grow healthier when they are stroked.
173
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
In zero gravity, a candle's flame is round and blue.
16
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Most dust particles in your house come from dead skin.
48
Diamonds can be shattered with a hammer.
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