0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Pumice is the only rock that floats on water.
14
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
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Sound travels fifteen times faster through steel than through air.
134
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101