It's estimated that on a given day, Chicago has over 80,000 vacant lots, spanning from 6,000 to 9,000 acres. Since 1975, Kenn Dunn, of the Resource Center, a nonprofit environmental education organization in the city, has been transforming some of these abandoned spaces into gardens, with the help of community members. Dunn's green acres often have to move because of shifting urban planning, and recently, five young Chicago designers came up with the Mobile City Farmstead that allows his team to move in style. Using a diverse range of materials, such as straw bales, salvaged shipping crates, and canvas, they have teamed together to create a uniquely urban architectural prototype that doubles as an excellent place to buy salad greens.