Kathleen Springer and Jeffrey Pigati collect samples for environmental change analysis from a trench in the White Sands playa. (IMAGE)

University of Arizona

Kathleen Springer and Jeffrey Pigati collect samples for environmental change analysis from a trench in the White Sands playa.

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Kathleen Springer and Jeffrey Pigati collect samples for environmental change analysis from a trench in the White Sands playa.

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Jessica Tierney

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