Balsa wood is classified as a hard wood!
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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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4.5 pounds of sunlight strike the Earth each day.
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For every gallon of sea water, you get more than a quarter pound of salt.
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One third of the electricity produced on earth is used to power electric light bulbs!
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Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
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