Guardian: As a climate scientist, I'm under pressure to be a political advocate. This comes mainly from environmentalists. Dan Cass, wind-farm director and solar advocate, preferred me not to waste my time debating "denialist morons" but to use political advocacy to "prevent climate catastrophe".
Jeremy Grantham, environmental philanthropist, urged climate scientists to sound a "more desperate note Be arrested if necessary." A concerned member of the public judged my efforts at public engagement successful...