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An examination of the Colorado River that sustains more than 40 million people in the West to see whether enough efforts are being made to see that it continues to flow, with populations booming and the waters receding.
Iceland may be the first nation to completely do away with marriage, with more than two-thirds of babies born out of wedlock.
The magical kingdom of Bhuton, "the happiest place on earth," is visited to see whether it can stay blissfully content as the modern world encroaches its borders.