Will netzero become more than hot air? That remains to be seen. While the science behind the concept is broadly sound, the politics of achieving netzero are a work in progress. Reducing greenhouse gas emissions to the point where they are zeroed out by carbon sinks by 2050 requires just and credible planning. We must prioritise the phase-out of fossil fuels sooner rather than later Last month, the leaders of the G7 declared their commitment to achieving netzero emissions by 2050 at the latest.