U.S. Postal Service
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Watch this video about the U.S. Postal Service on HowStuffWorks. If you've noticed extra postal trucks on the road recently there's a reason. With more than 900 million pieces of mail being... (more info)

Watch this video about the U.S. Postal Service on HowStuffWorks. If you've noticed extra postal trucks on the road recently there's a reason. With more than 900 million pieces of mail being delivered, December 20th is the busiest mail delivery day of the year. See how mail delivery works in this video from MultiVu.

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