Redirecting you to https://www.theguardian.com/environment/2021/jan/08/climate-crisis-experts-2020-joint-hottest-year-ever-recorded?utm_source=Nature+Briefing&utm_campaign=eca43984f1-briefing-dy-20210111&utm_medium=email&utm_term=0_c9dfd39373-eca43984f1-44714333