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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MIT has developed a camera that captures the speed of light at a trillion frames per second.
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Iron weighs more after it rusts.
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The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
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The Earth's atmosphere weighs about 5.5 quadrillion tons.
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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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