In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Iron weighs more after it rusts.
68
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
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
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
A 'jiffy' is an actual unit of time for 1/100th of a second!
66