Perched in the lower Santa Rosa Mountains, a 30-foot cross shines nightly over the Coachella Valley. Now maintained by St. Margaret’s Episcopal Church, it was installed at its current site in 1996 — ...

In the Arizona desert, James Turrell is creating one of ... Turrell is a sculptor of light. He will arrive at a museum with a construction crew, black out the exterior windows, and build a new ...

A massive green hydrogen plant proposed for construction in Chile could increase light pollution at one of the world’s most powerful telescopes by at least one-third, says the European Southern ...