Guardian: It had been a long, hot night in Bali, a few weeks before last Christmas, and talks on a new climate deal had dragged past the scheduled finish, through the small hours and well into the morning. The fate of the world remained in the balance. Faced with grim predictions from the world’s scientists, environment ministers from 192 countries were trying to agree how to tackle global warming. The deadline to agree the so-called Bali roadmap had come and gone, and rumours were rife that saving …