The bark of an older redwood tree is fireproof.
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4.5 pounds of sunlight strike the Earth each day.
27
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
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There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
In zero gravity, a candle's flame is round and blue.
16
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
A 'jiffy' is an actual unit of time for 1/100th of a second!
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