Keep cool and carry on

Global Warming The current trajectory of global warming is predicted to lead to an increase in global mean temperatures greater than preindustrial levels of 2.6° to 3.1°C by 2100. The Paris Agreement aims to keep that number below 2°C, with recent efforts pushing signatories to ratchet up those ambitions and stay below 1.5°C. Lo et al. assessed data on both climate and heat-related mortality from 15 major U.S. cities. They found that the current...