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Do you know how to choose surround sound? Get familiar with your options and terminology with this guide on how to choose a surround sound system.

Hybrid cars offer tax incentives. Learn more about hybrid tax credits at HowStuffWorks.

Street sweepers have been around for more than a century keeping our roads clean. Learn the history of street sweepers and what they're like today.

Natural cosmetics can be a safer choice in makeup. Learn what exactly natural cosmetics are and if going natural is always better.

Does brownnosing really pay off? Learn about brownnosing and read how to navigate the lines of flattery with your boss.

If my home's air filters are clean when I change them, are they really working? Find out the answer to this and learn more about air filters.

Can pets make you happy? Find out if pets can make you happy at HowStuffWorks.

Kill A Watt is a new type of energy monitor. Learn about Kill A Watt.

Ever wonder how to volunteer for the Salvation Army? Visit HowStuffWorks to learn how to volunteer for the Salvation Army and more.

Plastic bags can be more than recycled or thrown away. Check out these 5 unusual uses for plastic bags to learn some crafty ways to reuse plastic.

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