In zero gravity, a candle's flame is round and blue.
16
The sun is 330,330 times larger than the earth.
75
A cesium atom in an atomic clock beats over nine billion times a second.
43
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17