“IT IS CLEAR the next administration will try to do a U-turn and reverse much of this progress,” declared John Podesta, America’s climate tsar, at a UN climate summit held this week in Azerbaijan. His statement to the gathered greens and diplomats acknowledged a shared anxiety. Donald Trump has vowed to yank America out of the UN’s Paris climate agreement for a second time. Meanwhile conservative energy wonks around Mr Trump want him to make a push in three areas.