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January 12, 2010 - Environmental advocates were disappointed last month when Environmental Protection Agency Administrator Lisa Jackson announced that her agency would miss the promised end-of-the-year deadline to release a proposed regulation of coal ash.

December 23, 2009 - We've been counting down our top stories of 2009 -- and now (drum roll please!) here's our number-one pick.

December 22, 2009 - It was one year ago today that a 60-foot-tall dam broke at holding pond at the Tennessee Valley Authority's Kingston power plant in Roane County, Tenn., dumping more than a billion gallons of toxic coal ash onto a nearby community and into the Clinch and Emory rivers.

December 15, 2009 - Representatives from 15 environmental advocacy groups have called on President Obama to end the Tennessee Valley Authority's immunity from federal prosecution for its Kingston coal ash disaster and other violations of federal law.

December 9, 2009 - The

November 25, 2009 - A dam collapse at the Tennessee Valley Authority's Kingston power plant in eastern Tennessee l

September 17, 2009 - By Robert D.