I know Teller wanted to come across as calm and respectable so that people would take him seriously, but if he could look back now he would probably have acted like a deranged lunatic preaching in the streets about the dangers of carbon pollution.

I also think the same of Carl Sagan. For all his wonderful and critical achievements, I bet if he could see how things turned out, he would have unquestioningly devoted his life to spreading awareness about climate change here on Earth instead of focusing on astronomy and nuclear war.