U of T Scientists Find the World's Oldest Water in Ontario By Notable Life By Notable LifeView Author|December 16, 2016|LifeView Life A team of University of Toronto geoscientists have found the earth’s oldest water – in Northern Ontario of all places. As the CBC reports, the two-billion-year-old water was found in an active copper, silver and zinc mine near Timmins, Ont.... View this article.