‘…Yes, organic methods sequester more carbon dioxide than conventional ones. But the ultimate culprit behind agriculture-driven climate change isn’t carbon dioxide. Instead, it’s methane and nitrous oxide—two gasses conspicuously absent from the Rodale study. Agricultural production in the U.S. accounts for only 7 percent of overall carbon dioxide emissions. By contrast, it accounts for 19-25 percent of methane emissions and 70-75 percent of nitrous oxide emissions. Methane, according to the EPA, is 23 times more potent a GHG than carbon dioxide. Nitrous oxide is 310 times as potent.’
via Organic Agriculture: A Solution to Global Warming? – Freakonomics Blog – NYTimes.com.