In this February 2, 2015 photo, a tourist uses a tablet to make a picture after disembarking from the Ocean Nova cruise ship, on King George Island, Antarctica. Most visitors arrive on the Antarctic Peninsula, accessible from southern Argentina and Chile by plane or ship. The next most popular destination is the Ross Sea on the opposite side of the continent, which visitors reach after sailing 10 days from New Zealand or Australia. (Photo by Natacha Pisarenko/AP Photo)
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