The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
The smell of freshly cut grass is actually a plant distress call.
31
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
The only letter not appearing on the Periodic Table is the letter "J".
180
A cesium atom in an atomic clock beats over nine billion times a second.
43