A cubic yard of air weighs about 2 pounds at sea level.
31
Sound travels about 4 times faster in water than in air.
408
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
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
The force of a suction cup is calculated using F=AP.
15
The average home creates more pollution than does the average car.
33
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39