Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Your brain is 80% water.
525
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
German chemists made a replica of a trophy the size of one molecule.
68
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116