If you ever took a trip to the beach as a child, it's possible you will have been encouraged to hold a shell to your ear so you can "hear" the ocean. But why is it possible to hear sounds resembling ...

If you hold up a seashell to your ear and listen, you may hear what sounds like rolling waves and wind. But it’s not actually the ocean. Now that we’ve got that out of the way, what exactly is it that ...