In November, Washington state voters have the chance to pass the most ambitious carbon tax ever proposed in the U.S.

But there’s one problem: Virtually every major green group in the state is against it, or afraid to support it. What is going on?

In this week's podcast, we'll talk with David Roberts, a writer with Vox, about the strange battle within the environmental left over carbon pricing.

Then, we'll turn to the hacked emails from Hillary Clinton’s campaign. They also show a tense relationship between left-leaning environmentalists and centrists like Clinton.

And finally, we’ll discuss a landmark global treaty to slash HFCs. It’s another win for global diplomacy and the Obama administration. But will a Republican Senate ratify it?

This podcast is sponsored by Mission Solar Energy, a producer of American-madesolarcells and modules.