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Perfume is any substance that you wear and that smells. There are no requirements for it to smell good. Learn more about perfume at HowStuffWorks.

The President's benefits are nothing to sneeze at. Read about the perks and benefits you get when you become U.S. President.

The internet has made it possible to have a side job - or a full-time one - within your four walls, or just beyond them. We look at 10 great gigs.

Assisting living is one living option for seniors. Learn about what assisted living is, how much assisted living costs and assisted living services.

Coq10 can be used to treat many ailments and illnesses. Learn all about coq10 and other alternative medicines at HowStuffWorks.

Artificial geothermal energy is made by adding water to naturally hot rocks. Learn about artificial geothermal energy.

When sound waves strike the ear, these waves produce the sensation of sound. Let's take a look at how sound waves work.

Do you know what saunas do for your body? Learn about the history, function and health/skin benefits of saunas at HowStuffWorks.

Waterless toilets are a great way to save water. Visit HowStuffWorks to learn all about waterless toilets.

Grid energy storage is discussed in this article from HowStuffWorks. Learn about grid energy storage.

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