Over the weekend, more than 190 countries agreed to limit a global temperature increase to 1.5 degrees celsius over pre-industrial levels. Some are hailing the agreement as a big win for the climate, but how enforceable is the deal, and why doesn’t the text even once mention “fossil fuels”?

Professor Chris Williams, Pace University/Ecology & Socialism: Solutions to Capitalist Ecological Crisis & Dr. Michael Mann, Penn State University/Dire Predictions: Understanding Climate Change (2nd edition) joins Thom.