Delivering mail to all 372 million Americans along all 214,000 postal routes is no easy task. Learn how the U.S. Postal Service designs those routes in this episode of BrainStuff. 
 Learn more about your ad-choices at https://www.iheartpodcastnetwork.com

Delivering mail to all 372 million Americans along all 214,000 postal routes is no easy task. Learn how the U.S. Postal Service designs those routes in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com

Delivering mail to all 372 million Americans along all 214,000 postal routes is no easy task. Learn how the U.S. Postal Service designs those routes in this episode of BrainStuff.&nbsp;
 Learn more about your ad-choices at https://www.iheartpodcastnetwork.com

How Do Mail Carriers Get Their Routes?

Whether the topic is popcorn or particle physics, you can count on BrainStuff to explore -- and explain -- the everyday science in the world around us.

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How Do Mail Carriers Get Their Routes?

How Do Mail Carriers Get Their Routes?