For anybody that loves flat green roofs and is in the business of building or promoting them, the 2009 World Green Roof Congress is going to be held in Toronto.
According to Green Roofs for Healthy Cities, "The Congress will bring more than 1,000 delegates to Toronto from around the world to discuss the latest research, policy and technical advances in the rapidly growing green roof industry."
Toronto was chosen, in part, to its 2006 "Making Green Roofs Happen" report that "...will advance the use of green roof technology among City buildings and in the private sector." This commitment to green roofs ranks Toronto with Chicago, Washington, and New York as cities that are committed to green roofs and cleaner air.
More details can be found in a press release found here.