Briefing: The 15 options for net-zero emissions in the Paris climate text

This week Climate Analytics, a research organisation led by several IPCC authors, published what is probably the most rigorous attempt to apply IPCC science to net-zero emissions. It offers different pathways to 1.5 or two degrees, depending on how quickly emissions are cut in the next five years and how certain we want to be that warming limits won’t be exceeded.