It’s an honour to have been invited by the Pope to speak at an important climate summit at the Vatican. Following my recent re-election in London, I go with a clear message for other city leaders — this is not the time to back down, but to double down.
The incontrovertible truth is that our species is waging a war on the natural world, one that will ultimately lead to our ruin. Our hopes of keeping 1.5 degrees alive hangs by a thread. And whether in London or across the globe, it is the most vulnerable — those who’ve contributed the least to this catastrophe — who are shouldering the heaviest burden of the consequences.
