Most dust particles in your house are made from dead skin!
67
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
The earth is approx. 6,588,000,000,000,000,000 tons.
175
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
The force of a suction cup is calculated using F=AP.
15
A cubic yard of air weighs about 2 pounds at sea level.
31
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