"By 2025, that number [600 million people 60 and over worldwide] will double. And right now in the developed world, people 80 and over are the fastest growing population group. Two hundred people from around the world gathered at The Business of Aging Summit in Toronto (co-hosted by MaRS Discovery District and the Province of Ontario) [in 2009], to talk about the challenge and opportunity of what was quickly dubbed the "silver tsunami"." (Quoted from article)