1) Natural Resources Canada, Energy Efficiency Trends in Canada, 1990 to 2004, available at http://oee.nrcan.gc.ca/Publications/statistics/trends06/chapter3.cfm?attr=0
2) Environment Canada, Canada’s Greenhouse Gas Inventory, http://www.ec.gc.ca/ges-ghg
3) Environment Canada, Canada’s Greenhouse Gas Inventory, http://www.ec.gc.ca/ges-ghg
4) Mountain Equipment Co-op’s Green Building Program, available at http://www.mec.ca/Main/content_text.jsp?FOLDER%3C%3Efolder_id=2534374302883380&bmUID=1179948833019