For every gallon of sea water, you get more than a quarter pound of salt.
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One ragweed plant can release as many as one billion grains of pollen!
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The Earth's atmosphere weighs about 5.5 quadrillion tons.
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In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
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The bark of an older redwood tree is fireproof.
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One gallon of used motor oil can ruin approximately one million gallons of fresh water!
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Aluminum used to be more valuable than gold!
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