Re: Letters to Science in response to the paper by Tim Searchinger of Princeton and R. A. Houghton of Woods Hole et. all. in February.   It surprised the scientific world by documenting the oversights in calculating the environmental impacts of bio-fuels.

Biofuel production consumes food resources and produce added CO2.   It happens by causing the conversion of productive ecologies into farms.    These letters clarify some of the issues that were left unclear in their paper, but still leave big things out]

Letter to Science,

The 10/17/08 letters in Science by Vinod Khosla and reply by Tim Searchinger and R. A. Houghton do clarify some to the complicated measurement problems regarding the environmental impacts of bio-fuels on food production. Both seem to miss the largest of the growing strains on the food production resources of the earth. The real culprits are urbanization and economic growth, of course. Continue reading Biofuel impacts on food →