Jackson, Wyoming, is an unlikely place for urban farming: At an altitude over a mile high, with snow that can last until May, the growing season is sometimes only a couple of months long. It's also an expensive place to plant a garden, since an average vacant lot can cost well over $1 million. But the town is about to become home to one of the only vertical farms in the world. On a thin slice of vacant land next to a parking lot, a startup called Vertical Harvest recently broke ground on a new three-story stack of greenhouses that will be filled with crops like microgreens and tomatoes. "We're replacing food that was being grown in Mexico or California and shipped in," explains Penny McBride, one of the co-founders. "We feel like the community's really ready for a project like this. Everybody's so much more aware of the need to reduce transportation, and people like to know their farmer and where food's coming from."