If you were to look on the roof of your local city bus, what would you find? A little bit of dirt, most likely, and a whole lot of space. Precisely the stuff you'd find in an empty container garden! Enter NYU graduate student Marco Castro Cosio's Bus Roots, a project which, through installing gardens on the rooftops of New York City buses, seeks to "reclaim forgotten space, increase quality of life and grow the amount of green spaces in the city."