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How March Madness Works

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March Madness determines the college basketball national champion. Find out how teams get a ticket to the "Big Dance" and how the match-ups are selected.

Coalition troops have been surviving mainly on MREs (Meals Ready to Eat) for most of Operation Iraqi Freedom. Learn what these portable, adaptable and absolutely essential pieces of military technology are all about.

How Top 40 Radio Works

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If you grew up listening to Casey Kasem's Top 40, you probably waited with bated breath to find out which song made it to no. 1 that week. Well, the Top 40 is still around. Learn how a song makes it into that elite list.

How to Play Video Poker

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Video poker adds something slot machines don't have -- an element of skill. Learn how to play video poker.

How Police Dogs Work

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K-9 cops can sniff out drugs, bombs and suspects that would leave human cops ransacking entire cities. Learn all about the K-9 police force.

How Hangovers Work

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Think the 'hair of the dog that bit you' is your road to hangover salvation? Think again! Find out what really works for that hangover.

How Horoscopes Work

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Astrology holds that the relative positions of stars and planets have influence over the lives of human beings. Believers call it a science, while non-believers call it nonsense. Learn the basics of astrology.