Former U.S. Vice President Al Gore is considering a second bid for the White House. The An Inconvenient Truth filmmaker missed out on the top job after losing to George W. Bush at the 2000 presidential election. After the phenomenal success of his environmental movie it was rumoured he would run again. He has repeatedly denied he plans to campaign for next year's (08) election - but for the first time admits it's a possibility for the future. Democrat Gore says, "(His environmental duties) feels like a worthwhile mission. "I have not ruled (a presidential run) out entirely because I'm only 59, and 59 is the new 58 you know."