If you fly over the Canadian arctic, you may find the peculiar sight of two rivers merging but not fully integrating with each other, resulting in a split of dark and milky blue water. The differing densities and velocities of the Back and Hayes rivers have made them basically unable to mix until they reach the Chantrey Inlet; the Back river runs clear and brisk, while the Hayes is heavy with silt and clay. The photos are stunning. Read full article here
