In just two decades, the total value of the energy from fossil fuel extraction has plummeted by more than half.
Lance Selfa tells the story of the socialist writer's dramatic 1934 campaign to become governor of California -- and considers the lessons it holds for the left today.
Valerie Tarico is a psychologist. She is the author of Trusting Doubt: A Former Evangelical Looks at Old Beliefs in a New Light. She is also the founder of WisdomCommons.org.