Additional Resources

3. Lani, B.W., T.J. Feeley III, C.E. Miller, B.A. Carney, and J. Murphy, DOE/NETL's NOx Emissions Control R&D Program - Bringing Advanced Technology to the Marketplacehttp://www.netl.doe.gov/research/coal/crosscutting/environmental-control/nox-control

4. Maps showing trends in concentration and deposition of S and N in the United States: National atmospheric deposition project, http://nadp.sws.uiuc.edu/data/animaps.aspx

5. World Resources Institute, http://www.wri.org/