In 1899, it was so cold that the Mississippi River froze over its entire length.

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Arrowroot, an antidote for poisoned arrows, is used as a thickener in cooking (so if you ever get shot with a poison arrow, do not go to a doctor, look in your kitchen cabinet.

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The dragonfly has about 30,000 lenses covering the retina of its eye, and thus sees many, many images where we see only one.

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The coldest temperature ever measured on Earth was -129 Fahrenheit (-89 Celsius) at Vostok, Antarctica, on July 21, 1983.

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Until 1883, hemp was the world's largest agricultural crop, from which the majority of fabric, soap, paper, medicines, were produced.

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Less than one percent of the tropical rainforest species have been analyzed for their medicinal value.

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A cubic mile of ordinary fog contains less than a gallon of water.

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Tomatoes are very high in the carotenoid Lycopene; eating foods with carotenoids can lower your risk of cancer.

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The world's tallest tree is a coast redwood in California, measuring more than 360 ft or 110 m.

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here are many different shapes and colors of leaves. Click this link to see leaves of different shapes and colors!

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