Geologists examine a massive fissure in Arizona and find that may have existed way before it caught public attention.

Arizona may best be known for its desert landscapes, golf courses, luxury resorts, year-round activities, cities like Phoenix and Tucson – and, of course, the Grand Canyon – but there are also ...

Their doubts were well-founded. Though alligators are native to wide swaths of the southeastern United States, their range doesn’t extend to the Arizona desert. Russ Johnson had his doubts, too. Asked ...