Advancements in renewable energy are paving the way for a new climate politics. The environmentalist Bill McKibben articulates some of the possibilities in this new era of energy abundance.

They believe the accuser, but they also grieve the demise of a campaign that promised that politics could be different — and they blame those who failed to find a less flawed candidate.

The movement was better at critiquing the system than reshaping it. But it has never had this much mainstream political power.