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Engineering

Engineering is the discipline of design and construction of mechanical devices, equipment, structures and public works systems. Topics include aircraft technologies, buildings, bridges, robotics and heavy machinery.

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What grade of steel was used in the World Trade Center?

The materials used to build the World Trade Center's twin towers have been heavily scrutinized since the 9/11 terrorist attacks -- including the steel that formed the frames of the skyscrapers.

How the World Trade Center Slurry Wall Works

It's been compared Jerusalem's Wailing Wall. What purpose did the slurry wall serve the World Trade Center, and what is its significance now?

What caused the World Trade Center towers to collapse on 9/11?

It took years to construct the 110-story World Trade Center towers and less than an hour to bring them down to rubble. What ultimately caused the towers to collapse on Sept. 11, 2001?

What is glass ionomer cement?

Glass ionomer cement is a kind of cement used in restorative dentistry. Learn what glass ionomer cement is in this article.

How Birth Simulators Work

Full-size robotic mannequins give birth to robotic babies every day in medical training facilities. How do these mommy mimics prep students for the real deal?

What are the different types of architectural home styles?

Dozens of different types of architectural home styles from Federal to Mediterranean exist in the United States. Learn about the different types of architectural home styles in this article.

How Wind Tunnels Work

Wind tunnels are the unsung heroes of aerodynamics. Thanks to these breezy devices, we have safer planes, cars and space vehicles.They even provide some extreme fun for the adrenaline junkies among us. What's the deal with wind tunnels? Find out in this article.

How Kinesio Tape Works

Sports injury taping has undergone a quiet revolution over the last 30 years. How can a pattern of tape stuck to your body help you heal from (or prevent) an injury?

Science and Nature: Fractals

Fractals produce fascinating and intricate designs. Browse through this gallery featuring pictures of a variety of fractals like Mandelbrot and Julia sets and find out why nature is loaded with fractals.

How Dyneema Works

Dyneema is trademarked as the world's strongest fiber. Find out how this high-strength synthetic is capable of protecting an individual (or an entire vehicle) from IEDs or even shots fired from an AK47.

How Ultrasonic Welding Works

You probably know that high pitched or high frequency sounds can break materials apart. But did you know that high frequency sounds can be used to bond materials together?

How FIRST Works

Robots continue to work their way into every aspect of our lives, but these advancements aren't self-sustaining. The fields of robotics, engineering and science depend on a steady pipeline of young minds. And that's where FIRST comes in.

Will the Leaning Tower of Pisa ever fall?

Pisa without its precariously tilted landmark is like San Francisco without the Golden Gate or London without Buckingham Palace. Will the peculiarly enduring tower ever vanish from the Italian skyline?

10 Cool Engineering Tricks the Romans Taught Us

When it came to building or improving things, the ancient Romans really knew their stuff. Which cool engineering tricks did they pass along to us?

How have robots changed manufacturing?

Break things down to the original Latin and the term "manufacturing" is literally a matter of using your hands to make things. These days, those hands often aren't human. So how are robots remaking our world?

Are food-based plastics a good idea?

Once upon a time, food was used for one thing: eating. Today, it has a much more complicated role. And one of those roles might be serving as an upstart in the world of plastics.

How Electroluminescent (EL) Wire Works

Versatile and efficient, electroluminescent (EL) wire is widely used by artists to illuminate clothing, bicycle spokes, turntables and even cars. But how does this cool product work with so little power and without a visible energy source?

How Aerogels Work

This not-so-new material looks like a hologram and could play a valuable role in the future of insulation, electronics, oil spill cleanup and green energy. So why don't aerogels have the A-list name recognition they deserve?

10 Innovations Nominated for 2010 Edison Awards

The American Marketing Association created the Edison Awards to honor inventors and their innovations. With many great ideas to choose from, what are some of the nominees for 2010?

What is nanotechnology?

Nanotechnology is one of the hot buzzwords of the 21st century. You know that it has to do with things that are very small, but just what are the implications of technology on the molecular scale, anyway?

Are There Natural Nanotechnologies?

When most people talk about nanotechnology, they're referring to tiny machines built by humans. Could any molecules found in nature qualify as natural nanotechnology?

What is the gray goo nightmare?

If people could create nanomachines, they might be able to help fight diseases on the molecular level. They might even be able to replicate themselves. But what happens if that process gets out of hand?

Will robots change us?

Science fiction prepared us for life with robots long before it became a reality. They've already changed the way goods are manufactured, but can they truly change the way human beings live?

Could computers and robots become conscious? If so, what happens then?

Artificial intelligence has advanced very quickly. Some believe that it's possible that machines will eventually be able to improve themselves. But could machines ever truly achieve consciousness?

Can nanoscopic machines manipulate atoms?

Engineers have gotten good at making very small things. We're already talking about building at the nanoscopic scale. Is it possible to build tiny machines that can move even tinier atoms?

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