Canada possesses the greatest supply of fresh and salt water on the planet. This video examines the country's waterways, reserves and networks, and looks at the important role water has played in the past and present. Water shows how this precious resource has been both a boon and a challenge. Early explorers trying to locate the Northwest Passage to Asia ended up marooned and shipwrecked on the treacherous ice floes of the Canadian Arctic. Yet coastal waters have been treasured the world over for their bountiful fish stocks. And inland, the country's intricate systems of rivers and lakes have served …