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Common warts occur in people of all ages. Learn more about common warts at HowStuffWorks.

Shabbat is the holiday that is central to Jewish life, occurring every Friday at sunset to Saturday night. But what is it and how is it observed?

Placenta previa occurs when the placenta is low in the uterine cavity, covering the opening of the cervix. It can interfere with a normal delivery.

More than two centuries ago, the biggest volcanic explosion in human history occurred. And it had far-reaching effects.

Home safety is an important issue. Learn valuable safety precautions that will reduce the risk of an injury or death occurring in your home.

In 2022, the full moon, called the hunter's moon, will occur Oct. 9. Why is it called that and when can you see it?

Sleepwalking is an abnormal behavior that occurs while someone is sleeping. Learn more about sleepwalking and find out how sleepwalking is treated.

Pityriasis rosea is a rash that occurs at almost any age. Learn about how pityriasis rosea works at HowStuffWorks.

Summer stress syndrome often occurs in busy families. Learn more about summer stress syndrome from Discovery Health.

Some strange pregnancies have occurred, including a pregnant man. Take a look at this list of five strange pregnancies to learn more.

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