Scientists aren't sure what color dinosaurs were.
312
The average temperature at 40,000 feet above sea level is -60 F.
56
Nylon is made from coal and petroleum.
42
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
