Dr. Subir Bhattacharjee in his laboratory at the University of Alberta

Q&A: Subir Bhattacharjee on the Geopolitics of Oil and Alberta’s Tar Sands

Subir Bhattacharjee — a professor of mechanical engineering at the University of Alberta and one of Canada’s top water quality experts — tells Circle of Blue about the water cycle of the tar sands while he attends a high-level conference in Alberta, Canada.

Peter Gleick: Peak Water

Peak water is coming. In some places, peak water is here. We're never going to run out of water -- water is a renewable natural resource (mostly). But increasingly, around the world, in the U.S., and locally, we are running up against peak water limits. The concept is so important and relevant that The New York Times chose the term "peak water" as one of its 33

Photo Slideshow: Stunning Water Images from the European Space Agency

Images from space including the Ganges River in the Himalayas and the Fox Basin in the Canadian Arctic.