Vancouver Sun: Canada is crisscrossed by innumerable rivers, some of which flow into three oceans. Yet Canada’s fresh water isn’t as abundant as you may think. And it’s facing serious challenges and the looming menace of climate change, which is expected to exacerbate Canada’s water problems and leave more of the world thirsting after our precious liquid resource. "They say you need a crisis before people get jerked into taking responsible action," says Chandra Madramootoo, a water …