Associated Press: Once powerful rivals and leaders in their own parties, Al Gore and Newt Gingrich were anything but equal in their return Friday to Capitol Hill to debate the very future of Planet Earth. The Democrats running the House made sure of it. This time, the face of the 1994 Republican Revolution wasn’t allowed to share the stage with Gore, the Democrats’ Nobel-and-Oscar-winning hero. Instead, Gingrich waited his turn before the House Energy and Commerce Committee in an anteroom, as …