The Earth's atmosphere weighs about 5.5 quadrillion tons.
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In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
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Most liquid laundry detergents are alive with living organisms that help to break down stains!
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The hair of an adult man or woman can stretch 25 percent of its length without breaking.
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When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
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Scientists are now able to grow 'beating' heart tissue in a lab!
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Iron weighs more after it rusts.
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Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
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