Yesterday I appeared on the radio show On the Green Front, talking about various and sundry things including my TEDx talk, the federal appeals court ruling in favor of EPA, and the paucity of environmental news sources.

Before me came Roz Savage, who’s paddling solo across various oceans to raise awareness of climate and whose latest journey, across the Arctic Ocean, was scuttled by — irony alert! — melting glaciers. After me came my colleague Greg Hanscom, fresh back from Rio+20, to discuss the summit, what did (and didn’t) happen, and what it means for the future of the planet. Here’s the whole show: