His question was would we even know about climate change if not for governments spending loads of tax dollars on research. It's easily demonstrable that the answer is yes. Not every scientist in the world is on a government grant, and people want to now about stuff like ths. There's a clear market for that kind of information. Now if the question is how would a private society stop climate change? Well that is a tougher question. How are governments stopping climate change? They of course aren't. So to pelt libertarians with tomatoes from your ivory tower of socialism over climate change is laughably absurd because you're doing no better of a job.