The worst-case scenario for a high-emissions scenario has been revised downward – but the best-case option is now implausible Get our breaking news email , free app or daily news podcast In a world where people accept global heating is bad, news that we had avoided a boiling-in-our-own-juices version of the planet’s future might have been welcomed. Instead, the news that a group of climate scientists had officially retired their very worst scenario for the future of the planet was proof – according to Donald Trump – that the scientists had been (in all caps) WRONG! WRONG!