The Environmental Protection Agency has released the 1999 report on national methane emissions, entitled "US Methane Emissions 1990-2020: Inventories, Projections, and Opportunities for Reductions." The report (EPA 430-R-99-013) may be downloaded in .pdf format either as a complete document or in separate sections: Cover, Executive Summary, and Introduction, 361K; Landfills and Appendix II, 130K; Natural Gas Systems and Appendix III, 145K; Coal and Appendix IV, 101K; Livestock Manure and Appendix V, 130K; and Enteric Fermentation and Appendix VI, 80K. Further information is provided on the Reports page.