From: National Geographic Channel on Sun, May 09 2010 5:04 AM

When a train tunnel under the Schuylkill River starts taking on water, the transit authority has to act fast.

From: National Geographic Channel on Sun, May 09 2010 5:04 AM

When a train tunnel under the Schuylkill River starts taking on water, the transit authority has to act fast.

From: National Geographic Channel on Sun, May 09 2010 5:04 AM

An innovative circular skyscraper is being built in Abu Dhabi — but can it hold up to high speed wind gusts?

From: National Geographic Channel on Sun, May 09 2010 5:04 AM

An innovative circular skyscraper is being built in Abu Dhabi — but can it hold up to high speed wind gusts?

From: National Geographic Channel on Sun, May 09 2010 5:04 AM

A gravity-defying tower that leans nearly 5 times more than the Leaning Tower of Pisa is soon to put Abu Dhabi on the map.

From: National Geographic Channel on Sun, May 09 2010 5:04 AM

At Abu Dhabi’s Capital Gate, it will take 26,000 triangular glass panes to form the facade of the spiraling tower.

From: National Geographic Channel on Sun, May 09 2010 5:04 AM

At Abu Dhabi’s Capital Gate, it will take 26,000 triangular glass panes to form the facade of the spiraling tower.

From: National Geographic Channel on Fri, May 07 2010 4:11 AM

In New York’s Finger Lakes region, wind power is big business — and Sean Riley has to climb sky high to help make this repair!

From: National Geographic Channel on Fri, May 07 2010 4:11 AM

Sean Riley and engineer Steve make a precarious roller coaster repair 900 feet over Las Vegas.

From: National Geographic Channel on Fri, May 07 2010 4:11 AM

Sean Riley joins a Philly repair crew to tackle a train fix surrounded by 12,000-volt live wires.

From: National Geographic Channel on Fri, May 07 2010 4:11 AM

Witness the destructive power of mind-blowing storms from far away planets as they descend upon Earth.

From: National Geographic Channel on Fri, May 07 2010 4:11 AM

What would happen if the wildest storms in the universe hit Earth?

From: National Geographic Channel on Wed, May 05 2010 1:55 AM

Sean Riley, Host of World’s Toughest Fixes

From: National Geographic Channel on Sat, May 01 2010 9:21 PM

In 1859, a terrifying display of light filled the skies all over the world. This was no ordinary aurora.

From: National Geographic Channel on Fri, Apr 30 2010 8:12 PM

Cutting-edge engineering makes Cirque du Soleil’s KÀ performances possible.

From: National Geographic Channel on Fri, Apr 30 2010 8:12 PM

Sean Riley goes for a dive and shows us how cruise ship technology is inspired by nature.

From: National Geographic Channel on Fri, Apr 30 2010 8:12 PM

A construction team uses a flying crane to assemble a mountaintop ski lift in Cody, Wyoming.

From: National Geographic Channel on Thu, Apr 29 2010 7:45 PM

To put Abu Dhabi on the world map, fledgling property developers, Aldar, plan a whole new micro-city — Al Raha Beach.

From: National Geographic Channel on Thu, Apr 29 2010 7:45 PM

The massive fountain at the Bellagio needs some repairs, so the team goes inside to see how it operates.

From: National Geographic Channel on Fri, Apr 23 2010 5:00 AM

A plasma blast from the sun’s superheated atmosphere, the corona, could change life as we know it on Earth.