Article "Fixing the Global Nitrogen Problem" in Scientific American, Feb 2010

Fixing the Global Nitrogen Problem

Humanity depends on nitrogen to fertilize croplands, but growing global use is damaging the environment and threatening human health. How can we chart a more sustainable path?

By Alan R. Townsend and Robert W. Howarth

seee http://www.scientificamerican.com/article.cfm?id=fixing-the-global-nitrogen-problem for the full story.