The greenhouse gases that come from livestock are silent but deadly. Conventional wisdom, originating in a 2006 UN Food and Agriculture Organization report, says that livestock are responsible for 18 percent of global emissions, though a 2009 article by Robert Goodland and Jeff Anhang in World Watch magazine puts the number as high as 51 percent.
New research out of Newcastle University in the U.K., however, shows that this might be small potatoes. Coriander and turmeric, spices that are commonly used in curry dishes, were found to reduce livestock methane emissions by as much as 40 and 30 percent, respectively, when added to feed.
Read more … (Worldwatch)