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A water softener uses sodium to help replace calcium and magnesium ions. Learn about about water softeners and how water softeners treat your water.

Christmas carolers travel around the neighborhood on foot singing Christmas songs. Learn about Christmas caroling and Christmas caroling traditions.

California black-eyed peas are tender annuals which can be bushy or climbing plants. Learn more about black-eyed peas.

While Semmelweis wasn't the first doctor to advocate for hand-washing, he was the most vocal proponent at the time. And doctors didn't believe it.

The Quimby Manuscripts, published in 1921, demonstrate Quimby's early role in Christian Science. HowStuffWorks takes a look.

A casualty loss deduction can include losses of your home, household items and vehicles. See how to claim a casualty loss deduction.

Urban legends persist regardless of whether they are true or not. Read popular urban legends and learn why urban legends are culturally relevant.

Landing on Mars will be one of the most dangerous and rewarding space missions. Learn how landing on Mars will further our understanding of space.

Want to know how to brighten a dull complexion? Visit HowStuffWorks to learn how to brighten a dull complexion.

Pepper spray is a common law enforcement and self-defense tool. Check out this article and learn all about how pepper spray works.

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