Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
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Galalith is a type of plastic that can be made from milk. It is odourless, insoluble in water, biodegradable, anti-allergenic, antistatic, and virtually non-flammable.
1
No matter how cold it gets, gasoline will not freeze.
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Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
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