Nylon is made from coal and petroleum.
42
Research indicates that plants grow healthier when they are stroked.
173
One barrel of petroleum holds 42 gallons.
20
Scientists are now able to grow 'beating' heart tissue in a lab!
162
Iron weighs more after it rusts.
68
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Pumice is the only rock that floats on water.
14
The average home creates more pollution than does the average car.
33