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Paramedics are trained in prehospital care and are often involved in emergency situations. Learn more about how paramedics save lives every day.

This submarine image gallery will give you an inside look into one of the Navy's most sophisticated war machines. Check out these submarine pictures.

The tin or lead pins medieval pilgrims wore on their hats or cloaks, some playfully risqué, were meant to protect against plague.

Were hobbits and giants real? And are they distant relatives of humans?

In 1859, the Carrington Event was the most intense global solar storm ever recorded. The effects were felt all over the Earth.

Are people with tons of piercings and tattoos just enthusiasts, or could they actually be addicted to body modifications? Find out at HowStuffWorks.

HowStuffWorks takes a look at what makes motivational speakers so powerful and why millions flock to hear them speak every year.

Patriot missiles are designed to detect, target and then hit an incoming missile. How do the systems do that?

Knowing about common birth defects can help you prepare for your new baby. Learn about common birth defects at Discovery Health.

If you dread the crinkles and creases that come with aging -- don't! Stress only makes wrinkles worse. But how can you remedy the ones you've got?

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