Why I think there's still hope for the climate in 2017

Despite Trump halting reduction of the US's vast CO2 emissions, climate change is being taken seriously around the world from China to Sweden

Optimism has always been in short supply in conversations about global warming. Only for the briefest window - after the Paris climate agreement was reached in December 2015 - did the words "climate" and "hope" look reasonable next to each other in headlines. Then came 2016.

And yet, in spite of these past 12 months, I remain optimistic.