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The Salem witchcraft trials were some of the darkest events in all of American history. Learn about the Salem witchcraft trials.

Ever heard of a person going up in flames for no reason at all? Find out what spontaneous human combustion means.

Permanent hair removal is a serious undertaking. Visit HowStuffWorks to learn all about permanent hair removal.

How much does it cost to build a concept car? Read about all the expenses involved in building concept cars.

Habit is a term used in the study and practice of psychology. Visit HowStuffWorks to learn all about the term habit.

Memory is a term used in the study and practice of psychology. Visit HowStuffWorks to learn all about the term memory.

The American Ballet Theatre is world renowned. Visit HowStuffWorks to learn all about the American Ballet Theatre.

Halloumi cheese, delicious all by itself, is a great alternative to meat because, fried or grilled, the flavor can't be beat.

Professional fluoride treatments are quick and easy ways to protect your teeth. Learn all about professional fluoride treatments.

Polycystic ovary syndrome may not originate in the ovaries at all. Learn more about this common disorder at HowStuffWorks.

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