The original content of Democracy Now! Headlines appears under the Creative Commons BY-NC-ND 3.0 License (United States). For more, including their other shows and media, visit www.democracynow.org. April 20, 2009 EPA: Greenhouse Gases Endanger Human Health and Welfare ------------------------------------------------------- The Environmental Protection Agency said Friday greenhouse gases endanger human health and welfare, opening the door for the EPA to possibly regulate carbon dioxide as a pollutant. The EPA found that rising levels of greenhouse gases are "the unambiguous result of human emissions, and are very likely the cause of the observed increase in average temperatures and other climatic changes.” .