Before the Lærdal Tunnel was built, travel between Oslo, Norway's capital, and Bergen, its second-largest city, involved taking ferries or navigating treacherous, winding mountain roads ...

A fiery pileup inside a tunnel on Interstate 80 in Wyoming left at least two dead with five others injured late Friday morning. Fire and smoke billowed from the tunnel as people ran for safety.

Here's how the tunnel boring machine, or TBM, works: As the 200-ton TBM moves forward, a round cutter head studded with titanium teeth grinds into the tunnel face and splits large chunks off the rock.

Western Michigan University's applied aerodynamics laboratory took over the advanced design wind tunnel from the former McDonnell Douglas Aircraft Company (now the Boeing Company at St. Louis) and had ...

Maybe that's because it's also one of the world's steepest roads, chiseled into the mountain by local villagers. The Guoliang Tunnel is located in the Taihang Mountains in China's Henan Province ...

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When it opened on July 4, 1930, it was the longest mountain tunnel in the U.S. Today, the sandstone tunnel is a major thoroughfare and top Zion National Park attraction. As you drive through it ...