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A Small Sample

Maria Tausendfreund takes a water sample from a melt pond on top of an Arctic ice floe, which she will later analyze for microbes living in it. The graduate student from Alfred Wegener Institute in Germany was a member of the international crew of researchers and engineers who worked on the WHOI-led Arctic Gakkel Vents Expedition in the summer of 2007.(Photo by Chris Linder, Woods Hole Oceanographic Institution)