The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
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
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Hot water can freeze faster than cold water.
181
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57