Meet two sisters whose ambitious science experiment took them up and out of this world, a woman climbing to outrageous heights in order to clean the nation's wind turbines, and a photographer wading in the icy waters of the Great Lakes to ...See moreMeet two sisters whose ambitious science experiment took them up and out of this world, a woman climbing to outrageous heights in order to clean the nation's wind turbines, and a photographer wading in the icy waters of the Great Lakes to shoot "liquid mountains."
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