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How Crying Works

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Everyone cries. For some it's an emotional response, while others just shed tears when chopping onions. Are tears a way for us to cleanse our bodies?

How Robotic Vacuums Work

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Robotic vacuums can clean the house, remember its layout and find their own charging station. Learn about robotic vacuums and see the inside of a Roomba Red.

How Irrigation Works

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Irrigation provides water to plants. Learn how different types of irrigation work and examine the advantages and disadvantages of different types of irrigation.

How Spam Works

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Spam mail is an incredible nuisance to most Internet users. Learn how spammers send trillions of spam emails a year and why spam is a problem.

Smart dust sounds like something out of a Disney movie, but it's not. Also called a mote or a wireless sensing network, this new technology is intriguing everyone from military personnel to vineyard owners. Find out what the big deal is and explore the many possible applications of this tiny device.

Tamiflu Overview

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Learn how Tamiflu works, how you take it and whether it can really protect you from bird flu.

1930-1939 Cadillac

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The Cadillac Sixteen and Cadillac Twelve models helped catapult Cadillac to the pinnacle of luxury car design in the 1930s.

How a Theremin Works

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A theremin is an instrument you can play without touching. Learn how a theremin works and the history of the theremin at HowStuffWorks.

How Mexican Traditions Work

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Many Mexican traditions go back for hundreds of years. Read about Mexican traditional food, clothing, music and more at HowStuffWorks.

How the Tea Ceremony Works

people.howstuffworks.com/culture-traditions/cultural-traditions/tea-ceremony.htm

What is a tea ceremony like? Read about tea ceremonies and their cultural importance at HowStuffWorks.

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