It's time to stop just worrying about climate change, says Paul Gilding. Instead, we need to brace for impact, because global crisis is no longer avoidable; we have come to the end of a world economy based on consumption and waste, where we live beyond the means of our planet's resources. The Great Disruption offers a stark and unflinching look at the challenge humanity faces-yet also a deeply optimistic message. The coming decades will see loss, suffering, and conflict as our planetary overdraft is paid; however, they will also bring out the best humanity can offer: compassion, innovation, resilience, and adaptability. Gilding tells us how to fight-and win-what he calls the "one-degree war" to prevent catastrophic warming of the earth, and how to start today.