Against long odds, in 2007 the United States Supreme Court decided the case Massachusetts v. EPA in favor of the states and environmental groups that had sought regulation of climate disrupting emissions. The case had enormous implications for environmental law, and it laid the legal groundwork for the Obama administration's climate change policies as well as the global Paris Climate Accord. Harvard Law Professor Richard Lazarus, the author of the new book "The Rule of Five: Making Climate History at the Supreme Court," discusses with Steve Curwood the gripping behind-the-scenes story of how Massachusetts v. EPA made it all the way to the Supreme Court. LEARN MORE about this story and everything in our decades of archives at loe.org. We've got audio, transcripts, links, photos and more! . . . PITCH IN with your tax-deductible contribution at https://loe.org/about/donate.html. Thank you for your support! . . . FOLLOW US and join the conversation on Twitter, Facebook, and Instagram. . . .