Argument: Clean materials and processes can be used to produce hydrogen
Arthur St. Antoine. "Hydrogen, Fuel Cells, and Reality". Motor Trend. - "processes show some long-term promise for producing low-cost, clean hydrogen, including reforming biomass feedstocks like corn-based ethanol (which can be carbon-dioxide neutral--releasing only as much CO2 as the plants consumed in the first place), and experimental methods like converting sugar water to hydrogen at around 400 degrees F using a nickel-zinc catalyst or starving green algae cells of sulfur to cause them to generate hydrogen."