Trees are among the larges and oldest living organisms on Earth. Wood is also stronger than steel. Learn more about this remarkable commodity from the 'HowStuffWorks' show on Discovery Channel.
From cars, planes, speeding bullets to tall buildings, find out how lead truly makes the world go 'round. Learn more about this remarkable element in Discovery Channel's 'HowStuffWorks' series.
Water is everywhere, but not all of it is fresh, drinkable water. Learn why the oceans become saltier as time passes in this Discovery Channel video from the 'HowStuffWorks' series.
California grows most of the nation's produce on its fertile soil. Water to the region, however, is scarce and unevenly distributed. See how humans take control over the distribution in this clip from 'HowStuffWorks' on Discovery Channel.
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