No Urmstongran, this thread has not turned nasty, you have made statements which indicate that you are sceptical about what can be done about climate change and achieving net zero. Fair enough, and I share your concerns about what Britain can do versus what the developing world is doing, but you can't just accuse me of 'being nasty' because I have questioned your view. This is discussion forum, and I am expressing my view that there seems to be a link between those, like yourself, who dismissed experts and chose to vote for Brexit, and are now choosing to dismiss experts to back up your cynicism about the level of climate change, exacerbated, perhaps, by people taking frequent unneccessary flights among other things.