A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
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
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Nylon is made from coal and petroleum.
42