According to studies, men change their minds two to three times more often than women.
72
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Diamonds can be shattered with a hammer.
-104
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Scientists aren't sure what color dinosaurs were.
312
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5