How to Prevent Your Ears from Popping

For most people, traveling by air causes uncomfortable, sometimes painful ear popping. This can also happen when climbing to or descending from a high altitude, or when diving underwater. If you travel with kids, ear popping can make the trip all the more frustrating. So here's the scoop on ear popping - what causes it, and how you can prevent it.
How to Prevent Your Ears from Popping