The hair of an adult man or woman can stretch 25 percent of its length without breaking.
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Most dust particles in your house come from dead skin.
48
Hot water can freeze faster than cold water.
181
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
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
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15