Structural Engineering

In the last few decades, there's been a sort of arms race to build ever-taller skyscrapers. Which seven currently rank as the world's tallest buildings?

By Alia Hoyt

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

By Dave Roos

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.

By Laurie L. Dove

In 17th century Japan, wealthy citizens built homes with "nightingale floors" that squeaked, warning them of intruders. In fact, the floors squeaked louder when the steps got lighter.

By Nathan Chandler

It's always been a dilemma for humans: how to move that super-heavy object to a new place. But we always seem to find a way, don't we?

By Patrick J. Kiger

Some architects and engineers go big. Others get fancy. And yet others aim squarely for the completely bizarre. These imagination-bending, gravity-defying products may induce more than a few OMGs.

By William Harris

This dragon is illuminated every night, spitting out both fire and water on weekends and holidays, as it sways its way over the Han River in Da Nang.

By Jesslyn Shields

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

By Laurie L. Dove

Abandoned mine shafts may look romantic with their clapboarded entrances and rusting pickaxes, but they can be deadly. So who ensures that these dangerous sites are properly closed up? You may find the answer a little unsettling.

By Josh Clark

Steel is getting more expensive because the prices of iron and coal are rising. Are there alternatives to steel that can do the same job -- or better -- for less?

By Becky Striepe

Water towers can be found in just about every town and city in America. Have you ever wondered if they freeze in the winter?

Domed cities would provide the same temperature year-round, no rain or snow, and the ability to go outside without worrying about a sunburn. Have they been tried before, and what about the people who enjoy their seasons?

By Marshall Brain