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Today's Video - Assignment Discovery: SupersonicsSeptember 29: Supersonic speed is faster than the speed of sound. Learn more about supersonic speed and modern airplanes on Discovery Channel's "Assignment Discovery."
How Greenhouses WorkSeptember 29: Reproducing plants out of season gave man a measure of control over nature. The allure of it sparked the imagination and inspired new methods for building structures devoted to plants. So how do greenhouses work?
Top 10 Ways to Improve Your MemorySeptember 29: What's his name again? You know, the guy from the thing who was wearing the shirt? Memory fails us all once in a while, but cheer up -- HowStuffWorks has tips to keep you from blanking the next time you go to shake hands.
How Pyramid Schemes WorkSeptember 29: Here's a great investment opportunity: All you have to do is get five friends to sign up. When they pay to join in, you get paid. Sound too good to be true?
5 Failed McDonald's Menu ItemsSeptember 29: Now you see it, now you don't. That's usually how things go when a new menu item hits the market -- with a thud. McDonald's has had its share of not-so-successful sandwiches.