At the University of Salford in England, Charlie Mydlarz is working on a sound-map of the entire globe. He is asking people all over the world to contribute 10 to 15 seconds of the "soundscape" wherever they happen to be. It's part of his research into how sound makes people feel and act.

To listen to the map, and hear what it sounds like to be at Chet Singh Palace in Varanasi, or Pudong International Airport in Shanghai, or on the Gulf of Finland, go here. You can also, of course, contribute a "soundscape" of your own.