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When Were the Twin Towers Built?

science.howstuffworks.com/engineering/structural/wtc.htm

The twin towers of the World Trade Center were true originals -- their history is one of innovation, persistence and grand ideas.

How LAN Switches Work

computer.howstuffworks.com/lan-switch.htm

We wouldn't get very far without LAN switches -- bedlam would break loose at each network junction. Learn how LAN switches work.

How Carbon Capture Works

science.howstuffworks.com/environmental/green-science/carbon-capture.htm

We know that humans are largely responsible for fueling global warming with our carbon emissions. So what if we could seize all that carbon and squirrel it away in a safe place? Well, we can. It's just hard and really expensive.

Understanding Depression

health.howstuffworks.com/mental-health/depression/facts/understanding-depression-ga.htm

Understanding depression can help you catch a minor case of the blues before it becomes serious. Learn the signs of depression and how to treat depression.

How Sci-fi Doesn't Work

entertainment.howstuffworks.com/sci-fi.htm

Learn how sci-fi doesn't work in some popular movies and TV shows.

10 Unusual and Rare Flowers You Won't Find in Most Gardens

home.howstuffworks.com/gardening/garden-design/10-most-unusual-flowers.htm

Flowers are a matter of pride for gardeners, a means of expression for lovers and they play a role in some of our most joyous and somber societal rituals. But not all flowers are bright colors and perfumed scents. Some are quite unusual.

How Holograms Work

science.howstuffworks.com/hologram.htm

If you want to see a hologram, you don't have to look much farther than your wallet. But the most impressive holograms are large scale and illuminated with lasers or displayed in a darkened room with carefully directed lighting. Learn how a hologram, light and your brain work together make clear, 3-D images.

How the U.S. Vice President Works

people.howstuffworks.com/vice-president.htm

The Vice President is second in command to the president. Find out everything you need to know about the vice president.

How Childbirth Works

health.howstuffworks.com/pregnancy-and-parenting/pregnancy/labor-delivery/childbirth.htm

Childbirth is a miracle, but a messy one. Giving birth to a baby takes blood, sweat and tears. Learn about the process of childbirth from start to finish.

How Cells Work

science.howstuffworks.com/life/cellular-microscopic/cell.htm

The human body is composed of about 10 trillion cells. Everything from reproduction to infections to repairing a broken bone happens down at the cellular level. Find out all about cells.

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