Overpopulation, overconsumption, and overexploitation of Earth's resources go way beyond the realm of simple problems with straightforward solutions. Instead, they are dilemmas that require tradeoffs and difficult decisions. To guide such decisions, energy and sustainability expert Richard Heinberg explores big ideas such as the adaptive cycle, resilience theory, and prudent predator theory. Heavy topics abound, from death to extinction to societal collapse, but Richard proposes the "optimum power principle" to help humanity step back from the edge. And the good news is that we have a long history of deploying self-limiting tools (even ordinary policies like taxation and rationing) to curtail our overzealous quest for power. For more information, please visit our website. Learn more at postcarbon.org