Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Iron weighs more after it rusts.
68
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
The earth is approx. 6,588,000,000,000,000,000 tons.
175
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9