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10 Types of Wasps: Fierce but Not Always Threatening

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Think all wasps are just angry insects looking to ruin your picnic? Think again. There are types of wasps that build nests underground, some that live in solitary splendor and others that are downright helpful to your garden.

What Is ESP? How ESP Works

science.howstuffworks.com/science-vs-myth/extrasensory-perceptions/esp.htm

Have you ever had a dream that came true? Or called a friend at the exact moment he was calling you? Most of us have had some sort of paranormal experience. Is this evidence of the existence of ESP?

How Customs Works

science.howstuffworks.com/transport/flight/modern/customs.htm

To most people a trip through customs is just another stop in an airport or a country's borders. But customs agencies do much more for their countries' governments. In fact U.S. Customs raises more revenue than any agency except the IRS. Find out why and how they do it.

How Maglev Trains Work

science.howstuffworks.com/transport/engines-equipment/maglev-train.htm

Magnetic levitation trains are becoming a popular transportation topic all around the globe. Learn about electromagnetic suspension, the most popular type of maglev train.

How Night Vision Works

electronics.howstuffworks.com/gadgets/high-tech-gadgets/nightvision.htm

Most of us instinctively think of darkness as a way to hide. Night vision has changed all that. So, how can you see someone standing over 200 yards away on a pitch-black night? Find out.

How Alcatraz Worked

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Alcatraz was built to house the worst criminals and said to be impossible to escape. See pictures of Alcatraz and go inside Alcatraz prison to meet its inmates.

How U.S. Criminal Records Work

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U.S. criminal records are on the increase in recent years. Find out how U.S. criminal records work.

How Mustard Gas Works

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Mustard gas is a chemical warfare agent developed during World War I. Learn how mustard gas affected soldiers and armies used mustard gas.

How Yurts Work

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Yurts are circular lattice-walled tent used throughout history by nomads in Central Asia. Find out why yurts are popular with campers and nomads.

10 Controversial Court Cases

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Controversial court cases can both tear communities apart and shape our history for the better. Take a look at these 10 controversial court cases in the U.S.

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