We should also demand more of the large emitters. If all of the Paris signatories meet their commitments through to 2030, all we will reduce our emissions by is 1 percent—that's global emissions by 1 percent if every Paris signatory meets their commitments. We need the other emitters, the large emitters that are not a part of Paris, to play their part, otherwise our efforts will be in vain. And we don't want to do that: to sacrifice ourselves in the name of a global effort when not all the team are playing the same game, particularly when they have a far bigger impact.