When you drag your foot across sand that produces a squeaking sound, you create a shearing force across thousands or even ...

The next time you stroll along a white tropical beach, remember that the sand beneath your feet may have a far more complex ...

In some places, sand dunes protect shorelines from the onslaught of ocean waves. In other places, the dunes themselves are on the move, and threaten human structures. Host Flora Lichtman talks with ...

Out in the desert, the sand sometimes hums or ‘sings’ as people walk along the top of dunes. Find out what causes this beautiful yet creepy sound, and listen to audio of the sand song. Many people ...