If countries fail to step up their climate policies, the world could warm by a huge 3.1C this century – leading to “catastrophic” increases in extreme weather events including heatwaves and floods, the UN’s environmental agency has warned.
Even if all existing pledges to cut emissions were fully implemented, temperatures would still rise by at least 2.6C above pre-industrial levels – far beyond the 1.5C goal laid down in the 2015 Paris Agreement.
