WILL HIGH FUEL PRICES produce a Zeppelin comeback? “Thanks to their low fuel consumption, airships are enjoying renewed attention as an alternative in an era of high fuel prices. But while zeppelins inspire enormous loyalty among those who work on them and a sense of wonder among all who watch them soar, the financial returns have barely gotten off the ground. . . . The airships are proof that flying can still be a joy and a prod to the imagination. The experience is singular enough that tickets start selling at $300 for half an hour’s flight.”