Sound travels about 4 times faster in water than in air.
408
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Pumice is the only rock that floats on water.
14
Aluminum used to be more valuable than gold!
84
Pure water (H2O) does not conduct electricity on its own.
46
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
Scientists aren't sure what color dinosaurs were.
312