When The Weather Makers was first published, the book actually forced the John Howard government in Australia to change its environmental policy. While on tour to promote awareness of global warming, Flannery met with other political and business leaders, including Al Gore, Richard Branson and Prime Minister Stephen Harper's science advisor, as well as such leading thinkers as David Suzuki.

With Now or Never, a landmark essay about sustainability, Flannery reignites the conversation with new insights, warnings and solutions to the environmental dangers that confront us today. Flannery discusses in detail three potential solutions to climate change, the most urgent of the challenges we face in our pursuit of sustainability. Flannery's crisp and engaging prose presents his arresting argument with sincerity and enduring passion as he confronts the greatest threat of our time. The book also features detailed responses to Flannery's work by Richard Branson, Gwynne Dyer and others.

Brilliant and terrifying, Now or Never is a panoramic look at climate change in the context of human existence, by one of the world's leading thinkers and writers on the natural world.