San Francisco Chronicle: It’s all about the land, not the crops. While California and the nation pursue biofuels for energy security and climate change, we must ensure that cleaner technologies are the result, not irreversible damages. New research suggests that corn ethanol may have greenhouse gas emissions nearly double the emissions of gasoline. The reason is that the way we make biofuels today increases the global demand for land and accelerates the clearance of wilderness for new farms. For …