More signs appeared this week that the world’s climate is rising far faster than even the most pessimistic environmental scientists expected. Not only have Arctic air temperatures been an unprecedented 20°C higher than normal, but sea temperatures are averaging 4°C higher than usual this autumn, according to Danish and US researchers.

You do not need to be a bleeding heart green campaigner to comprehend that such data increases the urgent need to take effective action to implement the UN’s plan to limit global change by at most 2°C.

Politicians,