International Herald Tribune: If two scientists at Los Alamos National Laboratory are correct, people will still be driving gasoline-powered cars 50 years from now, churning out heat-trapping carbon dioxide into the atmosphere and yet that carbon dioxide will not contribute to global warming. The scientists, Jeffrey Martin and William Kubic Jr., are proposing a concept, which they have patriotically named Green Freedom, for removing carbon dioxide from the air and turning it back into gasoline. The idea is …