To see the rare green flash phenomenon, two conditions must be met: a clear day with no clouds or haze and a distant edge to ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. A green flash is seen during a sunset at Cerro Pachó in the Chilean Andes. . | Credit: ...

If you take a walk at dusk on one of the numerous beaches around San Diego County, you might be lucky enough to spot an event ...