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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Algorithms Not So Great at Identifying Adult Content

We humans may 'know it when we see it,' but the bots sure don't. At least not yet.

Egyptian Pyramids Built with Ramps, Not Alien Technology

We may finally know how the ancient Egyptians built the pyramids.

Soccer, Shopping, Dining: Mass Transit Stations Aren't Just for Travel Anymore

These days, you can do a lot more at a transit hub than simply catch a train or a bus.

Could We Build Our Own Gundams?

Well, heck yeah, we can, and we have. Let's take a look.

Meet the World's Longest Sea-Crossing Bridge

The Hong Kong-Zhuhai-Macao Bridge is 34 miles (55 kilometers) long and connects the territories of Hong Kong and Macao to mainland China for the first time.

50 Years After '2001: A Space Odyssey,' How Close Are We to HAL 9000?

Stanley Kubrick's sci-fi masterpiece '2001: A Space Odyssey' premiered 50 years ago, and it got a lot of things right. But what about HAL? How close are we to those kinds of capabilities?

Printing With Sound: The Wave of the Future

Researchers at Harvard University have developed a method of printing objects using the pressure of sound waves on even the most viscous liquids.

Recycled Plastic Waste Creates Roads

Plastic road materials-maker MacRebur is paving the way to a greener environment, using recycled waste to build roads.

Smart Wallpaper Contains Fire Alarm

Researchers in China have developed a non-toxic "smart" wallpaper that won't burn and triggers an alarm when it gets hot.

Chinese Robotic Sub Looks Like a Clown Fish

China's newest unmanned submersible isn't designed to be cute — it can go deeper underwater, stay under longer and maneuver more deftly than its predecessors.

The First 'Killer Robot' Was Around Back in 1979

With the Campaign to Stop Killer Robots heating up, we step back a few decades to look at the first human death by robot.

Installation Begins on the 10,000 Year Clock

A massive solar-powered clock being constructed inside a mountain in Texas is designed to keep time for 10,000 years.

Tons of Mardi Gras Beads Clog NOLA's Storm Drains

City workers have pulled 46 tons of the colorful beads from New Orleans' clogged catch basins, mostly from a five-block stretch along St. Charles Avenue.

How Removing Public Monuments Works

Controversy surrounds the removal of public monuments honoring the U.S. Confederacy. But who or what determines which monuments go up or come down?

Bollards, or How Cities Are Protecting Their Public Spaces From Terrorism

Defensive design is becoming increasingly important in cities around the world.

How Cosmic Rays Revealed a Secret Void in the Great Pyramid

Cosmic rays sound like something out of sci-fi, but they're helping scientists unlock the secrets of one of the oldest human-made structures in the world.

Why Aren't Modern Suburbs Built on a Walkable Grid?

You might be surprised to learn that the twists and turns of streets in the suburbs date all the way to the Industrial Revolution.

Researchers Create Odor Wheel That Breaks Down the Smell of Old Books

Old books smell a lot like chocolate and coffee, thanks to certain chemical compounds.

MIT's Robogami Wants You to Customize Origami-inspired, 3-D Printable Robots

Researchers want to make it easy for beginners and nonengineers to design a custom robot in minutes, then print and assemble the parts themselves.

During Transit Delays, Riders Prefer the Ugly Truth Over Platitudes

Is honesty the best policy? New York subway delays have been couched in mystery for years, but the MTA is now dishing out hard truths about why trains are running behind.

We Finally Know Why Ancient Roman Concrete Outlasts Our Own

The ancients were able to devise a mix for concrete that actually gets stronger over time thanks to chemical reactions. If only we could rediscover the recipe...

Fleshy, Huggable Robots Could Soon Roam Disney Theme Parks

A newly filed patent suggests that the famously stiff animatronics in Disney theme parks could get a lifelike upgrade.

Russian Gun-wielding Robot Totally 'Not a Terminator,' Says Russian Official

The android known as FEDOR used pistols to display its decision making and dexterity, officials said, not as a preview of robot warfare.

World's Largest Ship Tunnel Will Go Straight Through Norwegian Mountain

To carve out the massive Stad Ship Tunnel, engineers would have to blast through 7.5 million tons of solid rock.