Get creative with urban gardens. City neighborhoods are seeing edible gardens springing up everywhere from rooftops and fire escapes to postage stamp backyards and community spaces. Greening up the city is a wonderful way to eat local, to be sure, but less obviously, it is also a boost to air quality. Even if you have room for only a few pots on the balcony or windowsill, choosing to add a few potted edibles can make a difference, adding fresh air to your home and fresh greens to your table.