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 ...

The world often appears at is most beautiful at sunset and sunrise. And these stunning shots are perfect examples. Taken over the course of four years by Paul Reiffer, 35, the artistic shots depict ...

In Italy’s Dolomites, the ancient coral peaks glow pink at dawn and dusk in a rare natural phenomenon called the enrosadira – a magical moment that makes skiing here unforgettable. Maybe it's skiing ...