Without resolute counteraction, the effects of climate change are likely to exceed many societies’ adaptive capacities to internal or external stresses within the coming decades. This could result in destabilization and violence, jeopardizing national and international security to a new and...

While negotiations on a global deal to curb greenhouse gas emissions continue in slow motion, the pace of climatic change gains momentum. Higher than ever atmospheric greenhouse gas concentrations1 increase the likelihood and frequency of extreme weather events, as well as the probability of...