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.
Nikki Willoughby is social media manager at Common Cause. She oversees community action and serves as editor of the CommonBlog. Find her on Twitter @Nikki4CC or email her at email@example.com.