Paul Krugman: Phosphorus and Freedom

The Libertarian Fantasy

In the latest Times Magazine, Robert Draper profiled youngish libertarians — roughly speaking, people who combine free-market economics with permissive social views — and asked whether we might be heading for a “libertarian moment.” Well, probably not. Polling suggests that young Americans tend, if
anything, to be more supportive of the case for a bigger government than their elders. But I’d like to ask a different question: Is libertarian economics at all realistic?

The answer is no. And the reason can be summed up in one word: phosphorus.

As you’ve probably heard, the City of Toledo recently warned its residents not to drink the water. Why? Contamination from toxic algae blooms in Lake Erie, largely caused by the runoff of phosphorus from farms.