The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
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
In zero gravity, a candle's flame is round and blue.
16
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Cold water weighs more than hot water.
93