This disagreement between two climate scientists will decide our future
Vladi333/Shutterstock By Robert Chris, The Open University and Hugh Hunt, University of Cambridge Getting to net zero emissions by mid-century is conventionally understood as humanity’s best hope for keeping Earth’s surface temperature (already 1.2°C above its pre-industrial level) from increasing well beyond 1.5°C – potentially reaching a point at which it could cause widespread societal breakdown. At least one prominent climate scientist, however, disagrees. James Hansen of Columbia University in the US published a paper with colleagues in November which…