A cubic yard of air weighs about 2 pounds at sea level.
31
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155