Interesting quote from M. Thatcher.
I read Carl Sagan's book "Billions & Billions" about 10 years ago. He had been discussing global warming issues with a US politician who, like some others I have seen post on this topic, claimed that warmer temperatures would be "good for humans", and that increased levels of warmth/sun could easily be dealt with if we were to wear sunglasses. As Sagan pointed out in the book, this was not an option for life forms lower down in the food chain.
I gained the impression that he felt he was banging his head against a wall when trying to discuss these matters with politicians. But he did make one notable exception - someone who, in Sagan's belief, had a complete grasp of the issues, and that was Margaret Thatcher.