EcoWatch: Zero emissions is an ambitious but achievable goal. UN Secretary-General Ban Ki-moon Zero has become the most important number for humanity. Why? Any chance of stabilizing the climate hinges on transitioning to zero greenhouse gas emissions as quickly as humanly possible. Simply slowing the rise of emissions will not work. For the first time, the worlds leading climate authority, the Intergovernmental Panel on Climate Change (IPCC), has embraced a goal of near zero greenhouse gas emissions...