For every gallon of sea water, you get more than a quarter pound of salt.
45
Cold water weighs more than hot water.
93
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
One ragweed plant can release as many as one billion grains of pollen!
51
Scientists aren't sure what color dinosaurs were.
312
Nylon is made from coal and petroleum.
42
Pure water (H2O) does not conduct electricity on its own.
46