Sound travels fifteen times faster through steel than through air.
134
One ragweed plant can release as many as one billion grains of pollen!
51
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
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Indoor pollution is 10 times more toxic than outdoor pollution.
62