Pumice is the only rock that floats on water.
14
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
A cubic yard of air weighs about 2 pounds at sea level.
31
Balsa wood is classified as a hard wood!
41
Scientists aren't sure what color dinosaurs were.
312
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39