For every gallon of sea water, you get more than a quarter pound of salt.
45
The average temperature at 40,000 feet above sea level is -60 F.
56
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
One barrel of petroleum holds 42 gallons.
20
Indoor pollution is 10 times more toxic than outdoor pollution.
62
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71