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November 19, 2014
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.
Research in the critical zone takes scientists from bedrock to the top of the tree canopy.
Research in the critical zone takes scientists from bedrock to the top of the tree canopy.
Credit: NSF Southern Sierra CZO
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 awards $1.35 million for new institute focused on Earth's critical zone: Where rock meets life