Strip the City
More than 1000 tremors rock Los Angeles every year. Many are small but some are devastating. Scientists from NASA's Jet Propulsion laboratory have innovative technology to discover which buildings are most at risk.
How NASA Scientists Map The San Andreas Fault
In Los Angeles, there?s always the risk of the next big quake. Engineers must quake-proof buildings to keep city residents safe; these innovative techniques allow the entire structure to move when the ground beneath shakes.
Earthquakes Won't Stop Los Angeles From Growing
The roads to Machu Picchu aren't built for wheeled vehicles. Instead, they're carefully constructed so that humans and animals can traverse steep cliffs on staircases built into the mountainside.
Machu Picchu Was Built Without The Use Of Wheels
Still standing firm more than 500 years after being built, Machu Picchu continues to provide engineering lessons to those studying the ancient site. How did the Inca build such a site?
The Mystery Of Earthquake-Resistant Buildings At Machu Picchu
The Eiffel Tower was the tallest structure in the world for more than 40 years. Today, it's the most iconic landmark in Paris. See what lies hidden from the naked eye.
Secrets Of The Eiffel Tower: A Work Of Architectural Ingenuity
Paris has the second busiest Metro hub in Europe but cracks in the rocks could be a serious safety problem. Travel beneath Paris to explore a hidden world underneath the surface.
This Underground Danger Could Bring Paris to Collapse
New Orleans lies up to 10 feet below sea level and is surrounded by water. When a hurricane hits, the city is threatened from all sides
This Was Built To Protect New Orleans From The Next Katrina
Hurricane Katrina devastated much of New Orleans in 2005. Many people thought the city's Superdome was indestructible - but it wasn't. Now engineers take innovative steps to stop the next big storm from wreaking havoc.
What New Orleans' Superdome Has In Common With NASA Space Shuttles
After the devastating 2011 earthquake and tsunami, engineers in Japan search for safer ways to provide energy to the islands. One idea: The Squid.
Post-Fukushima, Japan Develops Safer Power Sources
The Tokyo Skytree is the tallest tower in the world. Take a look under the steel to see what keeps the tower standing tall and strong.
Ancient Ideas Support World's Tallest Tower
Venice stands on 10 million ancient tree trunks, rooted ten feet into a layer of firm clay.
Surprising Structure Holding Venice Up From Beneath The Ground
Comparing an 18th century painting to Venice as it looks today, scientists can determine how far and how fast the water level is rising.
What An 18th Century Painting Reveals About Modern Venice
As the largest rail hub in America, Chicago has to think creatively to keep the system and running... especially during extreme weather.
Creative Chicago Innovation Keeps L Trains Running
New innovations keep the second busiest airport in America safe during summer heatwaves in Chicago.
What You Don't Know About Chicago O'Hare Runway
Manhattan's distinctive skyline is shaped by schist bedrock, which provides a rock hard foundation for One World Trade Center, the tallest building in the Western hemisphere.
The Secret of Manhattan's Skyline
Dubai is designed to withstand incredibly strong sandstorms. See how engineers test infrastructure designs against winds up to 80 mph.