"It is with great sadness that the family of Professor Wangari Maathai announces her passing away on 25 September, 2011, at the Nairobi Hospital, after a prolonged and bravely borne struggle with cancer, " theGreenBeltMovement said in a statement.
But they are reminiscent of the very movement that brought about thegreenbelt in the first place, with groups like the CPRE lobbying during the 1920s and 1930s for safeguards against urban sprawl and so-called "ribbon" development.