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In 19th-century Paris, the Morgue Was the Best Show in Town
history.howstuffworks.com/european-history/19th-century-paris-morgue.htm
Today Paris' best-known attractions are perhaps the Eiffel Tower and Champs-Élysées. In the 19th-century, it was the morgue.
How Air Traffic Control Works
science.howstuffworks.com/transport/flight/modern/air-traffic-control.htm
There are about 5,000 planes in U.S. airspace every hour. How do these aircraft keep from colliding with each other? Learn about the intricate system that guides a plane from takeoff to landing.
Big Ben Is Getting a Big Facelift
history.howstuffworks.com/european-history/big-ben.htm
The famed London clock tower Big Ben marks 160 years in silence as its historic restoration continues. HowStuffWorks talks to the clock mechanic.
Do certain radio wave frequencies (like those used by cell phones) pose health risks?
electronics.howstuffworks.com/question4.htm
Do certain radio wave frequencies pose health risks? If so, is it safe to live within a quarter mile of a cellular phone tower or a radio antenna?
Tallest Building in the U.S. and 13 Other Stunning Skyscrapers
science.howstuffworks.com/engineering/structural/tallest-building-in-the-us.htm
When you look at the tallest buildings, you're not just gazing at steel and glass; you're witness to a place's aspirations for greatness. These record-breaking skyscrapers reshape urban space, optimize office space and serve as iconic landmarks.
There Are Castles in Ohio? No Foolin'?
history.howstuffworks.com/american-history/castles-in-ohio.htm
Castles aren't just a European thing. You can find impressive stone towers, dramatic spires, and fascinating stories scattered across the Buckeye State.
Castle History
history.howstuffworks.com/historical-events/castle-history.htm
Castle History is fascinating and reflects many of the social changes that took place during the Middle Ages. Learn about castle history at HowStuffWorks.
How was the construction of the World Trade Center unique?
science.howstuffworks.com/engineering/structural/world-trade-center-construction-unique.htm
The World Trade Center employed several new approaches to skyscraper construction. From slurry walls to sky lobbies to "tube within a tube" design features, what made this project distinctive from an architectural engineering standpoint?
What's the World's Tallest Building?
science.howstuffworks.com/engineering/structural/tallest-building-in-the-world.htm
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?
What grade of steel was used in the World Trade Center?
science.howstuffworks.com/engineering/structural/grade-of-steel-used-in-world-trade-center.htm
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.