Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
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Most dust particles in your house come from dead skin.
48
Each day, up to 150 species of life become extinct.
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Pure water (H2O) does not conduct electricity on its own.
46
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
One cubic foot of gold weighs more than 1,200 pounds!
78
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
Most dust particles in your house are made from dead skin!
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