Iron weighs more after it rusts.
16
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The storage capacity of human brain exceeds 4 Terrabytes.
140
The average temperature at 40,000 feet above sea level is -60 F.
56
According to studies, men change their minds two to three times more often than women.
72
Research indicates that plants grow healthier when they are stroked.
173