Emerald Cave, also known as Emerald Cove, shimmers with luminous green light. Here's the best time to visit Emerald Cave and how to get there.

Aeolian bedforms are common on Earth and across the solar system, including on Mars, Venus, Pluto, the Saturn moon Titan, the Neptune moon Triton, and Comet 67P. These geological features, among the ...

Boarding passes may just seem like a piece of paper, but it turns out your tickets have more information about you than you realize.

In this installment of A Look Back in Time, the Friday, July 12, 1935, edition of The Chronicle featured a story about Richard Carr, a 12-year-old from Denver, Colorado, who went missing after his ...

This week, as storm-driven dust caused crashes on Interstate 10 near Picacho and blew a haboob into Phoenix, weather researchers called dust a deadly and underrated weather hazard in Arizona. Dust ...

That’s exactly what happens at Wahweap Overlook near Page, Arizona. Mother Nature showing off again! The dramatic contrast between Lake Powell’s azure waters and the rusty red cliffs creates a ...

Explore Arizona’s Painted Desert: colorful badlands, easy hikes, cultural gems, and top visiting tips for a one‑of‑a‑kind ...

Why is the smell of Arizona's monsoon so distinctive? It releases the aromas of the desert, one ecologist says.