Al Gore has been unfairly accused of unsound environmental practices, according to Kaylee Kreider, his spokeswoman. The former vice president actually leads an eco-conscious green life — complete with solar energy and geothermal heating. His critics say he's attempting "to rewrite history." In question is an advertising campaign that begins today by the Competitive Enterprise Institute (CEI). The broadcast spot says Mr. Gore's Tennessee residence uses 20 times more energy than the average American household — a claim based on damning information released last year by the Tennessee Center for Policy Research, which examined Mr. Gore's utility bills. "The data...