"Shorelines are great locations to look for evidence of past life." Today, Mars is a chilly desert of rock and dust — but 4 billion years ago, the planet had rivers, lakes and even oceans with sandy ...

One of only four green sand beaches in the world, Papakolea sits at the southern tip of Hawaii’s Big Island. The ...

Some say the waters here are too rough and rocky to enjoy swimming ... though they cautioned that the beach's black sand can get very hot. It will most likely take you some time to get to Punalu ...

There are 14 states that make up the United State's East Coast; each with its own distinct feel, climate, and culture. From ...

It boasts miles of golden sand beaches, crystal clear water, and natural rocky cliffs. It's also famous for being the first place in Spain to see the sunrise from the east. And it enjoys year ...