Ancient rock structures help restore biodiversity on the US-Mexico border

CANANEA, Sonora — The day was windless. Long brown grasses speckled the landscape, and a stray tree erupted from the earth. The river channel was rusty, bone-dry. A pond that swells with summer rain glimmered on the horizon, but local rancher Eduardo Ríos Colores pointed toward the mountains, his finger tracing the route of a […]

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