Most dust particles in your house come from dead skin.
48
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
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
No matter how cold it gets, gasoline will not freeze.
107
Iron weighs more after it rusts.
68
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
In zero gravity, a candle's flame is round and blue.
16