Your brain is 80% water.
525
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Aluminum used to be more valuable than gold!
84
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Nylon is made from coal and petroleum.
42
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21