National Geographic (IMAGE)

National Geographic Society

National Geographic

Caption

Single-topic issue, "Water: Our Thirsty World," highlights challenges facing our most essential natural resource. Free download of interactive version of the April issue is available from March 22-April 2 at www.natgeofreshwater.com

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National Geographic

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IMAGE IS FOR YOUR ONE-TIME EXCLUSIVE USE ONLY AS A TIE-IN WITH THE APRIL 2010 ISSUE OF NATIONAL GEOGRAPHIC MAGAZINE. NO SALES, NO TRANSFERS. COVER MAY NOT BE CROPPED OR ALTERED IN ANY WAY. ©National Geographic

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