Andy Sacks/Getty Images CUTTING METHANE: A new feed additive, tested over two years in Canada, shows promise to reduce methane emissions from cattle. The product would work in beef and dairy operations, and can be part of programs to help offset carbon emissions. In a large-scale trial, Royal DSM saw emissions fall by as much as 80%. When discussing greenhouse gases, a critical measure is methane. The gas has greater impact than carbon dioxide on climate science, and often livestock are considered the key culprit. A Dutch company may have found the answer for cattle contributions with a feed additive that cuts methane emissions from livestock by as much as 80%.