Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
In zero gravity, a candle's flame is round and blue.
16
Sound at the right vibration can bore holes through a solid object.
134
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
All Humans Are 99.9% Genetically Identical and 98.4% of human genes are the same as the genes of a chimpanzee.
51