The San Pedro River travels north into Arizona from across the border in Mexico. It’s the last free-flowing river in the ...

The new tariffs — coming on what Trump has called “Liberation Day” — is a bid to free the U.S. from what he has said are years of unfair trade practices.

The Navy plans to build treatment plants near Joint Base Pearl Harbor-Hickam that would purify the fuel-contaminated water in ...

A combination of water management practices has contributed to notable groundwater gains in Central Arizona despite the ...