Bob Carter, one of the very few qualified scientific experts who disagreed with the scientific consensus on climate change, died recently at age 74.
It's hard to figure out the appropriate thing to say in this situation. There's what to avoid, first of all. Christopher Hitchens occasionally wrote hate obituaries of people he disliked. The only thing to say in his defense is he probably wanted someone to write a hate obituary for him when he died, but I'm still not going to follow his example. Another example to avoid are denialists (some of them) who attacked terminally-ill Nasa scientist Piers Sellers for his dedication to climate change work.
An example to follow instead is Matt Yglesias' response to being attacked by economic historian Niall Ferguson. Ferguson has written a lot of economic nonsense in recent years heavily seasoned with vitriol, including an attack on Yglesias. Matt responded by highlighting the - apparently - very good work that Ferguson had done in earlier years on World War I and the value of alternative history.
I'm not knowledgeable enough to do the same with Bob Carter, but I have read from people who are that he did good work on marine stratigraphy and was supportive of young scholars.
I hope we address the challenge of climate change quickly, and that in the long run the good that Carter did in building up science will be the most important part of his work.