Certain simple ideas have the power to transform humanity (for the better). Creating an organic community garden is one of those life-changing concepts. The forward-thinking nonprofit, EnrichLA, builds gardens at schools, using students, parents, and community volunteers to construct irrigated planting beds, trees, flowers, and vegetables. In the tradition of Habitat for Humanity, it all happens in one antic day. This is possible thanks to a smartly refined template — they’re in more than 50 locations; they know what they’re doing — and a charismatic leader, Tomas O’Grady, a handsome Irishman equally handy with power tools and public relations. Volunteer. Plant a seed. Watch what grows.