Are Republican voters 'warming up' to the science of climate change? CNN columnist and environment reporter John D. Sutter joins us to discuss encouraging news regarding American attitudes toward climate science -- even among Republicans. We also discuss the merits and challenges of a potentially game-changing ballot initiative to launch a carbon tax on fossil fuel emissions in Washington State, and the culpability the corporate media in under-reporting the most challenging and long-reaching issue of our time. And in related news today: A catastrophic wildfire in tar sands oil country in Canada sends 80,000 residents scrambling for their lives; the DoJ's finds NC's law discriminating against the LGBT community is a violation of federal law that could cost the state billions; Donald Trump's remarkably offensive 'celebration' of Cinco de Mayo; and a warning for gleeful Democrats regarding the aforementioned presumptive nominee of the Republican Party...