Grace Ju Miller has trekked through tropical highlands, taught sustainable farming across continents and earned degrees from some of America’s top universities. But she’s just as at home wading ...

MESA — The banks of the Salt River are home to about 440 wild horses in the Tonto National Forest, and they depend on the river for food and water.

Pima County sheriff’s deputies arrested a well-known pedophilia conspiracist Monday morning on charges related to stealing and damaging water tanks belonging to a humanitarian group.

How Amazon forest loss may affect water—and climate—far away A surge in deforestation under Brazil's president could "tip" the Amazon, affecting weather and water supplies—in Brazil and beyond.