In this Friday, Oct. 20, 2017 photo, after the final harvest of her rooftop garden, Estelle Smith brings basil, kale, a single snap pea and cumbersome tomato cages downstairs at her Minneapolis, Minn. home. Smith, a University of Minnesota Ph.D. computer science student, is a local Airbnb host who leases her full basement - including living space, bedroom and new shower - to a student. (Jean Pieri /Pioneer Press via AP)
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