Brass doorknobs automatically disinfect themselves in about 8 hours.
18
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
According to studies, men change their minds two to three times more often than women.
72
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
Liquid TIDE laundry detergent glows under a blacklight.
96
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41