Recently posted by the Environmental Protection Agency (EPA), this report describes progress made under the Acid Rain Program, established by Congress in 1990 under the Clean Air Act. The report, which details the reduction of the primary components of acid rain, "provides both basic information about the nature of acid deposition and detailed descriptions of how key indicators have changed." The...

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...