Research indicates that plants grow healthier when they are stroked.
173
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Hot water can freeze faster than cold water.
181
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
According to studies, men change their minds two to three times more often than women.
72