A cubic yard of air weighs about 2 pounds at sea level.
31
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
No matter how cold it gets, gasoline will not freeze.
107
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
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