Amazing atmospheric optics in action. Often times during the year, the peaks of the Santa Catalina Mountains glow during dusk and dawn. It’s a phenomenon known as “alpenglow”. Here’s how it works. As ...

Forbes contributors publish independent expert analyses and insights. I cover travel, specializing in adventure and the great outdoors. Sunset cliff-diving ceremony at Sheraton Maui Resort & Spa. No ...

Just after sunset on a recent January night the snowy Absaroka Mountains in the Paradise Valley glowed with a beautiful pink light. I referred to the sight as alpenglow, a word I had heard used before ...