Climate commissioner Connie Hedegaard discusses compatibility of the two programmes with state governor Jerry Brown
Connie Hedegaard has confirmed Europe will look to tie its emissions trading scheme (EU ETS) to California's when the state launches what will be the second largest carbon market in the world next year....
Scientists, politicians, NGO leaders and business executives offer their takes on the Paris Agreement rulebook
COP24: Paris Agreement 'stays on course' as Rulebook breakthroughs underline global commitment to climate action
Talks in Katowice overran by more than a day, as late rows over carbon market rules escalated, but final agreement paves way for a ramping up of global decarbonisation efforts
Scheduled end of COP24 sails past as countries tussle over details of Paris Agreement Rulebook
Negotiators expect talks to run into the weekend, but hopes for finished rule book remain high