Some Vermont farms are using "cow power" to convert methane gas from cow manure into electricity and sell the power to the area grid. Four farms are currently involved with a fifth about to come online. One dairy farm says the project has cut greenhouse gas emissions by 4,000 tons.

Vermont farmers have another resource to discover renewable energy possibilities. The "Farm Energy Handbook" was recently released from the Vermont Environmental Consortium and Vermont Dairy Task Force. Ben & Jerry's helped out, too. The handbook has advice on wind power, ethanol and even geothermal heating the cooling. All totaled, there are 13 different methods of making and using renewable energy on the farm.

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[Source: David Gram/Associated Press via Houston Chronicle]

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