In 1850, hundreds of migrant ships arrived in San Francisco harbor, fueled by gold rush. But many of these ships weren't needed after that and were simply sunk, making the city a maritime archaeologist's dream.
Water is a resource, a recreation, and a requirement for life itself. It is also a sight to behold, whether it's the product of millions of years of geological evolution or a remarkable feat of modern engineering. This aerial excursion whisks you above America's massive lakes, powerful rivers, mind-boggling glaciers, and shape-shifting wetlands as well as its man-made dams and canals. See how our interaction with water has shaped our nation's landscape and its history, and how its importance continues to ripple from coast to coast.
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