Note: Today’s show is a re-run. It originally ran in July 2013. Climate change seems like this complicated, intractable problem. But maybe it doesn’t have to be. On today’s show, we talk to a couple economists about a very simple idea that could solve the climate-change problem: tax carbon emissions. A carbon tax could be paired with cuts in the income tax. And it would drive down emissions without picking winners or losers, and without creating complicated regulations.