Paul Krugman: Springtime for Toxics

Here’s what I wanted for Christmas: something that would make us both healthier and richer. And since I was just making a wish, why not ask that Americans get smarter, too?

Surprise: I got my wish, in the form of new Environmental Protection Agency standards on mercury and air toxics for power plants. These rules are long overdue: we were supposed to start regulating mercury more than 20 years ago. But the rules are finally here, and will deliver huge benefits at only modest cost.

So, naturally, Republicans are furious. But before I get to the politics, let’s talk about what a good thing the E.P.A. just did.