One barrel of petroleum holds 42 gallons.
20
Indoor pollution is 10 times more toxic than outdoor pollution.
62
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
The storage capacity of human brain exceeds 4 Terrabytes.
140
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5