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In built-in lawn sprinkling systems, there is a device called an anti-siphon valve. What is it for and how does it work?
home.howstuffworks.com/question166.htm
In built-in lawn sprinkling systems, there is a device called an anti-siphon valve. What is it for and how does it work?
What does a V-chip do and how does it work?
electronics.howstuffworks.com/question167.htm
Do you know what the v-chip does in your TV? Learn how a v-chip detects TV ratings and gives parents the ability to control viewing of violent content.
How does a Star Wars lightsaber work?
entertainment.howstuffworks.com/question171.htm
How do the lightsabers in the "Star Wars" movies work?
How does copy protection on a video tape work?
electronics.howstuffworks.com/question313.htm
How do VHS tapes prevent you from bootlegging a copy of a movie? Find out how Macrovision works.
What is a smart card?
computer.howstuffworks.com/question332.htm
What is a "smart card"? Learn how an embedded microprocessor in a smart card can authenticate your computer usage and data. Learn about smart cards.
What Is Leap Year? And Why Was 1900 a Non-leap Year?
science.howstuffworks.com/science-vs-myth/everyday-myths/question50.htm
February is an unusual month, especially when it comes to leap years. In this article, you can read about why we use leap years and how the year 2000 was a leap year and 1900 was not.
Sept. 10 1953: Swanson Sells First TV dinner
people.howstuffworks.com/swanson-dinner.htm
Swanson TV dinners were developed in 1953 when families were watching shows such as "I Love Lucy". Read more about the history of Swanson TV dinners.
Sept. 24, 1954: NBC's 'Tonight Show' Debuts
entertainment.howstuffworks.com/tonight-show.htm
The NBC Tonight Show debuted in 1954 with Steve Allen as the show's first host. Learn more history of the NBC Tonight Show and its infamous hosts.
If an Astronaut took a Pet Bird Into Space, Would it Fly?
animals.howstuffworks.com/animal-facts/birds-in-space.htm
Birds in space would actually do quite well because their wings would help stabilize them as they float through space. Learn about birds in space.
How much food and water do you need for a one-year stay on Mars?
science.howstuffworks.com/mars-for-a-year.htm
Going to Mars for a year requires that you take a substantial amount of food and water with you. Find out how much you need to take if you're living on Mars.