“…The LA 21 (5) continuously established new institutionalized temporary events on specific topics, in which more sustainable social practices were developed (7, 8-10, 13, 16-19, 22, 33, 35-37, 40-45, 48-50, 52, 53, 57, e, u, aa). It also initiated the city's environmental advisory board (11), where all relevant organizations from the region regularly come together to advise the city council on environmental and sustainability-related questions.…”