The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
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Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
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Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
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4.5 pounds of sunlight strike the Earth each day.
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The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
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According to studies, men change their minds two to three times more often than women.
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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
At room temperature, the average air molecule travels at the speed of a rifle bullet.
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