An Interesting Coincidence?

The papers published in Science two weeks ago continue to make headlines, as a quick search of Google News will show. Also this week, oil reached the $100 per barrel mark.
Meanwhile, debate over the Science papers continues, and some truths are out there, as we said when we began this public forum.
Nathanael Greene of the Natural [...]

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 [...]

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 [...]