Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
The average temperature at 40,000 feet above sea level is -60 F.
56
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
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
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65