Forests for green cities

industrial cities (pollution, urban degradation, consumptive resource use) into opportunities. They focus on a sound environment in which accessible green is a main component, next to carbon neutrality, sustainable mobility and outstanding environmental management (including among others zero waste, clear air and high quality piped drinking water) and services.2 Green cities pay a lot of attention to health and well–being. This concern dovetails in the historical link with the healthy city concept. This latter was launched by the World Health Organization in the 1970ies and combined aspects of physical with mental health.