From First Nations activism to innovative city initiatives, the West Coast is leading the fight against global warming even as America on the whole lags behind.

As bad as Exxon has been in the past, what it’s doing now — entirely legally — is helping push the planet over the edge and into the biggest crisis in human history.

In a wide-ranging conversation, the journalist and climate activist discusses the recent Paris climate accords, the politics of global warming, climate change denial and environmental justice.

The Canadian company behind the Keystone Pipeline is suing the US government. It’s a perfect example of why many environmentalists are wary of Obama’s secretive trade deals.

Climate change won't just disrupt natural systems, it will spark new human conflicts over resources.