Oklahoma Senator James Inhofe, who has stated that global warming is the "greatest hoax ever perpetrated on the American people," walked out in the middle of Senate hearings today on the worst man-made environmental disaster in US history, TVA's colossal coal ash catastrophe near Kingston, TN.

Jan. 8 hearings of the Senate Environment and Public Works Committee were called to allow TVA Chairman Tom Kilgore, local Roane County emergency officials and environmental experts an...