A cubic yard of air weighs about 2 pounds at sea level.
31
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
In zero gravity, a candle's flame is round and blue.
16
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Scientists are attempting to create a synthetic brain by reverse-engineering the mammalian brain down to the molecular level. A cellular human brain is predicted possible by 2023. It hopes to shed light on consciousness.
10
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61