Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
For every gallon of sea water, you get more than a quarter pound of salt.
45
One barrel of petroleum holds 42 gallons.
20
There is a surgical implant being developed that will give you an orgasm at the touch of a button.
20
Iron weighs more after it rusts.
16
According to studies, men change their minds two to three times more often than women.
72