It also noted that outside of Reykjavík, the nation "opens into vast stretches of untamed terrain" with towering glaciers, hot springs, and black sand beaches to explore. "This environment blended ...

An expert task force in San Diego has proposed utilizing fluorescent trackers to better understand the movement of the area's sand.

While black sand beaches are often associated with other places, such as Iceland and Hawaii, the Bay Area has one of its own.

Here, coastal cliffs and crags are punctuated by black-sand beaches and rich rainforest hides a towering volcanic cone. So ...