If you are looking for a sand dune park that offers peak adventure, look no further than Little Sahara State Park in Oklahoma ...

I got my first lesson in the physics of sand dunes in 1998 on an expedition into the Sahara. In order to take ... It weighs a little under a hundred pounds; its top airspeed is 30 miles an hour.

This striking astronaut photo shows off an "eye-catching" impact crater in the Sahara Desert. The oculus-like structure is surrounded by migrating sand dunes that are capable of traveling more ...

What do you picture when you think of the Sahara? A vast expanse of towering sand dunes? The occasional oasis ... mostly dry, and has little vegetation – but it wasn’t always that way.