The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
Pure water (H2O) does not conduct electricity on its own.
46
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Diamonds can be shattered with a hammer.
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A 'jiffy' is an actual unit of time for 1/100th of a second!
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