The force of a suction cup is calculated using F=AP.
15
Your brain is 80% water.
525
Iron weighs more after it rusts.
68
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79