PNAS PLUS New Trans-Arctic shipping routes navigable by midcentury Laurence C. Smith1 and Scott R. Stephenson Department of Geography, University of California, Los Angeles, CA 90095

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Date: 2013-03-04 14:31:43		PNAS PLUS New Trans-Arctic shipping routes navigable by midcentury Laurence C. Smith1 and Scott R. Stephenson Department of Geography, University of California, Los Angeles, CA 90095 Add to Reading List Source URL: www.pnas.org Download Document from Source Website File Size: 1,42 MB Share Document on Facebook