In the spirit of Blame America First, now environmentalists are saying that the United States exports pollution beyond its borders, while Europe's pollution stays put.

The United States exports nitrogen pollution beyond its borders and some of this nitrogen may end up in Western Europe, according to a recent data analysis by scientists at the National Center for Atmospheric Research (NCAR) and the University of New Hampshire. Most of the nitrogen pollution produced in Western Europe is deposited within its own boundaries, the authors found.