In zero gravity, a candle's flame is round and blue.
16
The average temperature at 40,000 feet above sea level is -60 F.
56
Hot water can freeze faster than cold water.
181
The sun is 330,330 times larger than the earth.
75
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Sound at the right vibration can bore holes through a solid object.
134
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9