David Stern and Robert Kaufmann, of the Center for Energy and Environmental Studies at Boston University, provide "the first estimates," by year, of human-made methane emissions from seven sources, including gas flaring, coal mining, and biomass burning. Data are available in ASCII or binary spreadsheet formats, and a graph shows the rise in methane emissions from 1860 to 1994. The site explains...

This document, provided by the US Energy Information Agency, summarizes emission data reported for 1995 as part of the Voluntary Reporting of Greenhouse Gases Program. Global warming is caused by increasing quantities of greenhouse gases being emitted into the atmosphere. Such gases include carbon dioxide, methane, nitrous oxide, and toxic pollutants. Estimates of temperature increase range from...

Over the past decade, the state of California has set aggressive greenhouse gas emissions targets across all sectors of the economy. The first major target occurs in 2020, when the state hopes to have reduced statewide greenhouse gas emission from their current levels to 1990 levels. This 320-page paper from RAND researcher Ryan Keefe takes a critical look at the policies adopted by California in...

The Environmental Protection Agency (EPA) has posted its final report on the methane emissions in the United States.

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;...