New Hampshire is quietly forging ahead with its effort to reduce the threat of the gasoline additive MTBE. The additive improves air quality, but it has also contaminated ground water. New Hampshire is seeking permission to design its own gasoline ? one that would burn cleanly, but could contain almost no MTBE. But even if the state wins approval for a new gasoline, it?s not clear whether any refineries will choose to make it. NHPR?s Doug MacPherson reports.
