Balsa wood is classified as a hard wood!
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It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
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Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
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Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
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One ragweed plant can release as many as one billion grains of pollen!
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At 15 years old, Jack Andraka invented a method of diagnosing pancreatic cancer, thus helping to save the lives of millions of people around the world. It is 168 times faster, 26,000 times cheaper, 400 times more sensitive, and has a 99% success rate.
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Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
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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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