As the Arizona Trail winds past the proposed Oak Flat copper mine, the search for climate solutions takes on new meaning.

Nine Arizona-based companies appear on the freshly released 2025 edition of the prestigious Fortune 500 list of the largest public companies in the nation, ranked by revenue. That total was one shy of ...

Over seven weeks this fall, Arizona Republic climate reporter Joan Meiners is biking the length of the 850-mile Arizona Trail from Utah to Mexico to report on how climate change is affecting the state ...