The Ecotopia 2121 Project details the futures of 100 cities across the globe as though they've somehow overcome all environmental challenges and become super-ecofriendly. This month, we highlight the future of Athens. Athens, one of the oldest cities in the world, has a current population of three million. It has been hard hit by financial problems in recent years as Greek masterplanners experiment with various kinds of radical remedies: austerity, stimulus, debt default, and