THE global climate policy process is no longer fit for purpose and requires comprehensive overhaul, a group of prominent scientists, advocates and policy leaders said today. 

The urgent message in the open letter  to the United Nations comes as world leaders gather in the Azerbaijani capital Baku for the 29th Conference of the Parties climate summit (Cop29).

Signatories to the letter include former UN secretary-general Ban Ki Moon, Earth4All executive chairwoman Sandrine Dixson-Decleve, Potsdam Institute for Climate Action Research director Johan Rockstrom, UN Framework Convention on Climate Change former executive secretary Christiana Figueres and former Ireland president Mary Robinson.