After a year of extreme weather events and recent studiesoutlining climate change’s impacts, it’s become increasingly clear that we must understand what emissions reduction pathways are necessary to avoid these risks. The Intergovernmental Panel on Climate Change’s (IPCC) last Assessment Report, for example, outlined the emissions reductions needed from developed countries to stabilize concentrations of greenhouse gases (GHG) consistent with limiting warming to 2°C. Further research has continued to examine the global GHG emissions reductions necessary to avert dangerous climate change. And as countriesimplement existing policies and consider new ones, the scale of required emissions cuts is a fundamental question. In fact, it’s one of the most pressing questions facing the international climate change community.
One new study shows that we have to reduce emissions even more than scientists initially thought in order to avoid climate change’s worst impacts.