The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Most dust particles in your house come from dead skin.
48
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
Scientists aren't sure what color dinosaurs were.
312
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
A cubic yard of air weighs about 2 pounds at sea level.
31