Nylon is made from coal and petroleum.
42
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The sun is 330,330 times larger than the earth.
75
Most dust particles in your house come from dead skin.
48
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310