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Cover Figure


COVER Science began publication on 3 July 1880. A special section marks the journal's 125th anniversary by exploring 125 questions that point to gaps in our basic scientific knowledge. See page 75. [Kelly Buckheit/Science; images, clockwise from top: Jupiter Images, JPL/NASA, Louie Psihoyos/Corbis, JPL/NASA, NASA/JPL/Cornell, Hans Pfletschinger/Peter Arnold]

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Science. ISSN 0036-8075 (print), 1095-9203 (online)