2016-05-19. As U.S. moves to cut greenhouse emissions from farms, new study finds big global challenge.

posted May 25, 2016, 1:40 PM by Alan Gould
By Virginia Gewin, Patrick Monahan, Science. For GSS Climate Change chapter 10. Excerpt: From cow burps to decaying food waste, agriculture is a major source of greenhouse gas emissions. Researchers estimate farms are responsible for about 13% of total global emissions, making it the world’s second-largest source, after energy production. And now that nations have committed to trying to hold global warming to no more than 2°C above preindustrial levels, researchers and policymakers are looking for practical ways to cut agriculture’s contribution to climate change. Two recent developments could inform that search. Last week, officials in the United States—one of the world’s largest sources of agricultural products—released a progress report on U.S. efforts to promote “climate smart” agriculture. And this week, an international research team published a study that highlights the big changes in farm technology and human behavior that will be needed to achieve the worldwide farm-related cuts necessary to stay below the 2°C threshold....  http://www.sciencemag.org/news/2016/05/us-moves-cut-greenhouse-emissions-farms-new-study-finds-big-global-challenge