Out of all the places to have a farming renaissance, who would guess uber-urban Hong Kong? But it’s true: concerns about food safety in China coupled with a rising interest in the provenance and quality of ingredients has sparked action. HK Farm is a 4,000-square-foot rooftop farm in industrial Ngau Tau Kok started by a group of artists and designers, with plans to expand. Zen Organic is a former pig farm that a pair of siblings inherited and turned into one of the city’s most sought-after sources of produce. Down with pollution and in with the greens!