The Dutch Architect Aldo van Eyck (1918-1999) built with a social purpose. His most famous building is maybe the Amsterdam Orphanage that influenced school building around the world with its integration of smaller pavilions to form a small town as a building. He had great attention to in-between spaces that could be occupied in endless ways by the kids.
One of his often overlooked achievements was building around 700 playgrounds on vacant lots in Amsterdam in the 40s and 50s. Up to 90 of them can still be seen today.
The project intersects with recent public debate in Copenhagen about air pollution in the city. In collaboration with Senior Scientist Jørgen Brandt from The National Environmental Research Institute in Denmark a first prototype is developed for making an indicator that can be placed in the city and display local levels of pollution as well as pollution forecasts on individual streets. The project holds an open source script for displaying data from the Internet in a variety of forms.