The small town of Fort Chipewyan in northern Alberta, Canada, is facing up for the fight against The Alberta oil sands, which is arguably now the world's largest construction project. Its expansion will have an estimated $1.7 trillion impact on the Canadian economy over the coming decades. An area of boreal forest the size of Greece will be affected by industrial activity. Once again the issue is water, but this time it is not just the flow of the river, but the chemicals the current may be carrying downstream from the strip mines and bitumen upgraders. In recent years, Fort Chipewyan has experienced an unusually high rate of cancer. Local fishermen are finding growing numbers of deformed fish in their nets. Residents and the community doctor, worry there could be a connection to the oil sands...