Cold water weighs more than hot water.
93
Scientists aren't sure what color dinosaurs were.
312
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
Iron weighs more after it rusts.
68
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
A cesium atom in an atomic clock beats over nine billion times a second.
43
Nearly 50% of the world's scientists are assigned to military projects.
71
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108