Don Valley Stadium of these eventualities the seated capacity would have been raised to 45,000. In addition when the British government cancelled the proposed Picketts Lock stadium in Edmonton, London which was to hold the 2005 World Championships in Athletics, UK Athletics suggested to move the host city to Sheffield using the Don Valley Stadium, but the IAAF stated that having London as the host city was central to Great Britain winning the bid to host the tournament. The championships bidding process was reopened as a result with the Helsinki Olympic Stadium in Helsinki, Finland hosting the 2005 World Athletics Championships. Although Sheffield
Don Valley Parkway considered an "industrial wasteland" and which had seen its last industrial use (the Taylor, later Domtar, Paper Mill) close in 1982. The Toronto City Council formed the "Task Force to Bring Back the Don", an organization of volunteers to work on conservation efforts in the Don Valley. Since that time, the task force has planted some 40,000 trees in the valley, planted thousands of wildflowers and overseen the creation of wetlands along the river. Efforts continue to ameliorate the water quality of the river and improve the environment of the surrounding valley lands. These efforts can be seen in the