IPCC: Unprecedented Changes Needed for 1.5°C Global Warming Limit 9 October 2018 IPCC: Limiting global warming to 1.5°C would require rapid, far-reaching and unprecedented changes.Author: Capt. Johnhttps://worldmaritimenews.com/archives/262170/ipcc-unprecedented-changes-needed-for-1-5c-global-warming-limit/