Tag Archives: Searchinger

Is the Debate on Land Use Over?

The full implications of the German Marshall Fund and Nature Conservancy articles in Science and the agenda and arguments of environmental and conservation advocates are coming more into focus. Consider comments posted by Nathanael Greene of the Natural Resources Defense Council on his Switchboard: While we still do not have international protocols that pay to protect or simply prohibit clearing of carbon rich lands, emissions from cleared land driven by marginally higher demand is simply Read More >

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Scientists Respond to Carbon Debt Issue

Reaction to the ScienceXpress articles by Searchinger et al. and Tilman et al. has focused on the assumptions the teams of authors used in measuring greenhouse gas emissions from changes in land use. As Michigan State University Professor of Chemical Engineering Bruce Dale points out, Both of these papers are modeling studies and are therefore completely dependent on the validity of the models themselves and also of the basic assumptions and data input to the Read More >

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Biofuels and Carbon Debt

The Energy Independence and Security Act of 2007 establishes an ambitious renewable fuel standard that increases biofuel production and use to 36 billion gallons by 2022. The standard also mandates that renewable fuels produced in new facilities constructed after enactment of the Act, which occurred in December 2007, “achieve at least a 20 percent reduction in lifecycle greenhouse gas emissions compared to baseline lifecycle greenhouse gas emissions.” The Act does not specify a specific instrument for measuring Read More >

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