Ars Technica: Agriculture is not responsible for the bulk of worldwide greenhouse gas emissions; that honor goes to more fossil-fuel intensive activities like transportation and generating electricity. Even still, greenhouse gas emissions from global agriculture are climbing by 1 percent a year. Humans did once upon a time live without HDTVs and Hummerswe could do so again, at least in theorybut people will always have to eat. This makes reducing agricultural emissions particularly difficult. Researchers in...