Editor’s Note: This episode of the Shocked podcast is a great primer to learn how emissions markets work and how they got their start in the U.S. It also unpacks how the Gujarat market came to be and its success. To listen to more Shocked episodes, visit here.

In theory, the free market should help solve climate change. In reality, it’s rarely that simple. This episode explores how emissions markets work, where they’re taking off to reduce pollution, and why economists still believe markets are essential—if politics will let them be.