Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Diamonds can be shattered with a hammer.
-104
Termites are being researched as a possible renewable energy source as they can produce up to 2 litres of hydrogen from ingesting a single sheet of paper, making them one of the planet’s most efficient bioreactors.
24
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Iron weighs more after it rusts.
68