The Ecotopia 2121 project details the futures of 100 cities and towns across the globe as though they've somehow overcome all the grave environmental challenges our own age and grown to become super-Green and super-sustainable. Today, we highlight the future of San Gimignano, Italy. San Gimignano in Italy is a unique place. The town’s ten thousand citizens are clustered onto a Tuscan hilltop setting that has changed little in six centuries. Among the old stonewall houses and