John Humphrys to Cicerone: 'You don't sound - if I can use this word - apocalyptic. You're not saying 'If we don't do these things...we're going to fry, in a few years': Ralph Cicerone: Well, there are people who are saying those things'
Humphrys: 'But not you'
Cicerone: 'No. I don't think it's useful, I don't think it gets us anywhere, and we don't have that kind of evidence'