I didn’t stop flying to make a statement, really, but I just can’t stand the thought of the 100,000-year climate impacts. The last time I flew I just wanted to puke. Also I feel that if I, who knows something about climate change, don’t take it seriously, who will? But I know it’s not saving the world or convincing anybody, so that’s not why I’m doing it.
I do computational ocean and sediment geochemistry, modeling the CaCO3 cycle, methane hydrates, and most recently oceanic mercury. I wrote a textbook for a global warming class, supported by a web page full of models and an on-line MOOC at coursera.org. I also wrote The Long Thaw about the longevity of the climate impacts from fossil carbon use, and a couple of other global warming books.