PNAS Cover Image (IMAGE)

DOE/Argonne National Laboratory

PNAS Cover Image

Caption

The Negev Desert, Israel, where researchers from Argonne and the University of Chicago used the radioisotope krypton-81 to identify two distinct source contributions to the water in the Nubian Sandstone Aquifer.

Credit

Zheng-Tian Lu, University of Science and Technology of China

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