Trees On Top – roof gardens reduce air pollution

Trees On Top – roof gardens reduce air pollution – Brief Article

The roof of Chicago’s City Hall is to be planted with grass, ivy and oak trees, as part of a project to show that roof gardens reduce air pollution. In Switzerland, town planners are one step ahead of the game. A new byelaw states that new buildings must relocate the vegetation lost to the construction’s ‘footprint’ to the roof of the house.

COPYRIGHT 2000 MIT Press Journals

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