For the perfect beach town vacation in New England, head to this charming Massachusetts escape with world-famous clams and ...

This story appears in the November 2012 issue of National Geographic magazine. I got my first lesson in the physics of sand dunes in 1998 on an expedition into the Sahara. In order to take aerial ...

What do you picture when you think of the Sahara? A vast expanse of towering sand dunes? The occasional oasis, perhaps? But mostly, we tend to imagine a very sandy landscape. Turns out ...