Our series “We Used to Be China,” continues with stories about our country confronting the environmental challenges that now bedevil China. Problems like… acid rain. It was the environmental crisis of the ’80s, but a new Clean Air Act in 1990 greatly reduced the pollutants causing acid rain. It did so with something we now call Cap and Trade…setting a maximum level of pollutants and then letting industry decide how to get there.

Listen above for more.