Thatcher was commendably among the earliest conservatives to warn about climate change though she did not remain in power for much longer after she did so… she had a science background and had a better grasp of the issue than most tories then or now (and her religious/social convictions did not prevent her from caring about the problem as they did with AIDS). When people like ymb say that support for green policies is non-tory then they are being dishonest… it is clearly possible to be a green tory:
https://www.margaretthatcher.org/document/107817
Closing our coal mines was undoubtedly a net positive for the environment because coal is a dirty resource… though it was done in extremely cruel and socially destructive way with little regard for the communities left behind… it is disingenuous to say that Labour closed more: Labour and Tories closed hundreds of pits over 1945-1979 but both did so gradually and carefully to reduce harm without removing he economic backbone of individual communities…Thatcher rapidly closed 115 in a few years and in such a manner that was absolutely devastating to places like Yorkshire…
Unfortunately i think humanity has let the environmental problem get so bad that we are about out of time for gentle solutions… the responses we’ll be forced to take to the climate issue will make Thatcherism look like a picnic.