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What is a sea cucumber? HowStuffWorks looks at these strange sea creatures.

Why do we sleep? What happens when we sleep? Learn more about sleep from Discovery Health.

A fetus's alertness in the womb may surprise you. Learn about alertness in the womb at Discovery Health.

Is milk good for you? It can be highly beneficial or highly detrimental. Learn the truth of whether milk is good for you.

S adenosylmethionine could be helpful in treating various forms and causes of pain, from arthritis to depression. Learn about S adenosylmethionine.

There are some easy ways to make your shoes last. Take a look at our tips to make your shoes last.

Is it safe to switch to synthetic motor oil? Read about synthetic motor oil and whether it's safe to switch at HowStuffWorks.

While alcohol consumption is not completely alien to the space program, not much is known about its effects on the body outside our atmosphere.

Is the world run by the Illuminati or just some reptilian overlords? Test your knowledge of conspiracy theories with this HowStuffWorks quiz.

These massive clouds form when wildfires give off heat. HowStuffWorks looks at how climate change is making conditions favorable for more to form.

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