One barrel of petroleum holds 42 gallons.
20
Iron weighs more after it rusts.
16
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Hot water can freeze faster than cold water.
181
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
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
There is a surgical implant being developed that will give you an orgasm at the touch of a button.
20