Dividends: Woodstock Nation

America's flirtation with wood-burning stoves has flamed into a love affair. So strong has the affinity become that more U.S. homes are now heated by wood than by electricity from nuclear power plants. A recent study by Dartmouth College's Thayer School of Engineering also found that more than 49% of all industrial boilers built in 1980 burn mainly wood. Says Energy Expert Nigel Smith of Worldwatch: "The U.S. is on the crest of the wave of nations returning to wood."

Nonetheless, burning wood has important drawbacks. It produces polluting gases, soot and ashes...

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