Most dust particles in your house come from dead skin.
48
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Billions of neutrinos pass unnoticed through your body every second.
6
4.5 pounds of sunlight strike the Earth each day.
27
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Sound at the right vibration can bore holes through a solid object.
134