Environmental problems have contributed to numerous collapses of civilizations in the past. Now, for the first time, a global collapse appears likely. Overpopulation, overconsumption by the rich and poor choices of technologies are major drivers; dramatic cultural change provides the main hope of averting calamity.
- Received November 28, 2012.
- Accepted December 7, 2012.
- © 2013 The Author(s) Published by the Royal Society. All rights reserved.