Free Press: The public debate over climate-change agents has focused recently on coal, shale oil and fracked natural gas - fossil fuels, all. Vermonters might draw vague solace from knowing that these disputed resources, and the key battles being waged over how and whether to contain production, are mostly out of their hands - and out of state.
Yet Vermont has a trademark resource that's also, indisputably, a source of greenhouse gas emissions: livestock. Cows, sheep and other animals put out methane, a potent...