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February 6, 2012
Images credited to the National Science Foundation, a federal agency, are in the public domain. The images were created by employees of the United States Government as part of their official duties or prepared by contractors as "works for hire" for NSF. You may freely use NSF-credited images and, at your discretion, credit NSF with a "Courtesy: National Science Foundation" notation.
Additional information about general usage can be found in Conditions.
Urban sustainability knowledge-action systems are a focus at NSF's Luquillo LTER site.
Urban sustainability knowledge-action systems are a focus at NSF's Luquillo LTER site.
Credit: NSF Luquillo LTER Site
Images credited to the National Science Foundation, a federal agency, are in the public domain. The images were created by employees of the United States Government as part of their official duties or prepared by contractors as "works for hire" for NSF. You may freely use NSF-credited images and, at your discretion, credit NSF with a "Courtesy: National Science Foundation" notation.
Additional information about general usage can be found in Conditions.
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Related story: NSF Forum: The Challenge of a Sustainable Future: Long-Term Ecological Research Offers New Answers