Todav£¬after decades of wasteful use of fossil fuels£¬energy reserves have fallen to a crisis level£®At government urging£¬ many dollars are being spent to develop alternative sources of energy£®The search£¬however£¬has involved more than looking for ways to harness the sun£¬wind£¬water£¬and even garbage£®It has also led to a rediscovery of what our fore¡ª bears knew as a matter of fact£º Nature stores massive amounts of energy every year in the form of wood£® Our ancestors£¬viewing the sweeping forests of this conti¡ª nent£®found woodland and forest riches beyond belief£® Demands of a growing nation£¬however£¬led to masslve assaults upon the virgin forests which had been thousands of years in the making£®Total acreage of U£®S£®forests fell from 2 billion acres tO 800 million acres by 1900£® World War I put massive demands upon our remaining forests£¬and by 1920 forest fires were claiming 30 to 40 million acres annually£®Fortunately£¬through fire control and careful cutting and restocking of trees£¬our forest reserves have been rebuilt back to 765 million acres£® Little of this wood is being used to heat the homes of
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