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Customs agencies regulate the flow of goods in and out of countries, impose duties and enforce laws. In this episode, Josh and Chuck take a look at how customs works.

Taste seems like a pretty simple sense, but scientists are still trying to figure out exactly how it works. Josh and Chuck explore the complexities of taste, from definitions and physiology to tongue maps and supertasters, in this episode.

Population may not seem like the most scintillating topic in the world, but Josh and Chuck beg to differ. Join them as they explore how population works, from demographics to population control, in this episode.

Sleep behaviors are pretty fascinating. Some people snore, some grind their teeth -- and some take a little stroll, or perhaps a drive. In this episode, Josh and Chuck investigate how sleepwalking, or somnambulism, works.

Sure, nicotine doesn’t cause cancer, but it does rearrange the brain's reward system. Humans have been ingesting this plant for more than 6,000 years, but we generally understood little of it. Join Chuck and Josh as they explain how nicotine works.

Does this episode seem strangely familiar? If so, you might be experiencing deja vu, a topic that scientists are beginning to study seriously. Discover the myriad theories about how deja vu works in this podcast from HowStuffWorks.com.

These are some of my works, and they date as far back as 2005 to only a few months old. This music was created with the intention of being free to listen and free to download. My works are not copyrighted, nor are they intended for profit. Thank you for downloading, and enjoy.

The Innocence Project is an American non-profit organization whose mission is to exonerate wrongly convicted individuals and reform the legal system. Josh, Chuck and a special "guest" explain how the organization works -- and why it's necessary.

With the world's best weaponry, a shadowy legal status, and almost no oversight, Delta Force is the stuff of military legend. Check out this HowStuffWorks podcast to learn why Delta Force was created, and how this group works.