This is the second in a four part series of longerform episodes. There were some stories we wanted to tell that didn't fit neatly into our usual format so we decided to bring them to you as a miniseries over the next few weeks. In this episode we explore noise pollution in airports. Often a great amount of attention is given to how a place looks but not how it sounds. This week we hear from Christopher Birch the director of Guest Experience at SFO and Johannes Sittig of Sittig Technologies about the ways they've worked with sound to create a better experience for travelers.  

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