Tim Flannery's Quarterly Essay was a national bestseller. Now or Never combines this landmark essay with nine responses to it by leading figures, and Flannery's reply. The result is an essential short book about the most urgent issue of our time. Flannery begins by discussing the idea of sustainability, and asks whether humanity can rise to this challenge. He brings to life the latest climate science and its implications. And he discusses in fascinating detail three potential climate change solutions, with special reference to Australia. Includes responses from Peter Cosier, Richard Branson, David Foster, Geoff Russell, Alanna Mitchell, Ian Lowe, Barney Foran, Barrie Pittock and Gwynne Dyer.