But for now, let's be clear about the urgency. London has serious air pollution problems, one of the worst in Europe. Action must be taken now. The government would be wise to back the Mayor of London's plans rather than fight them and extend it to other UK cities.
The beast of capitalism has slid under most noses for too long, but now it is exhibited within the White House for all to see. Trump and his team are not 'maniacs', the world has not 'gone mad'. No these people know exactly what they are doing, and they love such escapist labels. It is precisely us, civil society, that must stop them in their tracks with this loud and clear message: you may have ruled the world until now, but no longer.
Walking in the mountains of Snowdonia, the problems of the city can feel a long way away. The negative impact of poor air quality on human health is, thankfully, increasingly well-documented. Not only does air pollution contribute to thousands of early deaths, it also compromises the health of people suffering from ailments like asthma.
'What's good for the planet is good for the economy', rang the message at SWITCH! Vivienne Westwood's Climate Revolution event on Monday evening at Fabric in London.
There are many ifs and buts here, and it is a long and distant road we face with many unknowns. And from the outset, it looks disastrous for climate change. But amongst all the dark clouds there is hope, and we must do our utmost to pursue that hope.
In just over two weeks time, the UK public will vote in a referendum deciding their membership of the European Union with much at stake, not least around the area of climate change.
Given the state of our economy, our society, our environment, we can no longer wait that long. We need to elect more Greens, put Greens in power, to deliver a new society that works for the common good, not just the 1% of the richest, within the environmental limits of our one fragile planet.
I have such a vivid memory of sitting in a geography lesson at school when I was 14 or 15, exasperated by boredom as the teacher systematically made us memorize information about soil that seemed to have little, if any, relevance to my everyday life...
At the moment, 'wild' is on trend. The marketing and advertising industries have turned their eye to the romantic escape fantasies we all covet. 'Find your wild,' the advert insists, click to buy.
During the years I have been following the climate debate since the failed Copenhagen COP15 talks in 2009, I have never been more optimistic than I am today, the week after all the 195 UN countries finally came together to secure a global deal on climate change.