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How the U.S. Customs Service Works
people.howstuffworks.com/us-customs-service.htm
A fascinating article that tells you everything you need to know about U.S. customs laws, how they affect your travels and what you may bring back into the United States!
In the Mariana Trench, Animals Adapt in REALLY Weird Ways
animals.howstuffworks.com/marine-life/10-weird-creatures-from-mariana-trench.htm
The Mariana Trench is the deepest place on Earth, and we're still in the dark about much of the life that calls it home. Here are just a few of the trench's eye-popping residents.