Just add sewage: How a bone-dry river bed became a thriving haven for desert wildlife

Arizona's Santa Cruz River is currently imperiled. Stretching for 180 miles through major cities like Tucson and into the Sonoran desert, the Santa Cruz River is in danger of drying up because of human factors like climate change and irresponsible wastewater disposal. Yet even though sewage is not the stuff of romance and legend, the same gross stuff that has helped imperil the Santa Cruz River may help save it.

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