Optimism for Cop26: we must win the climate battle – and we absolutely can

As an environment writer, I have seen many setbacks - but also triumphs such as the tackling of acid rain

I've been covering climate and the environment for 17 years - it's astonishing to me that so many positive things are happening in response to the crisis.

Of course, we should have been bringing down emissions much sooner, and lots of the things that should have happened didn't. In particular, I'd point to energy efficiency, which we all thought would be a big win early on, and fossil fuel subsidies, which have not come down as fast as we would have hoped.