The 1,187-ft long Oasis of the Seas, the world’s largest cruise ship, towers 213 feet above the water and carries four 7,500 horsepower bow thrusters. Here are pictures of the construction, test run and maiden voyage of the Oasis.

Three pieces of an emergency repair to the Bay Bridge made over Labor Day weekend snapped and crashed onto the upper deck of the span late Tuesday afternoon, striking three vehicles and forcing the indefinite closure of the region's busiest bridge.

The applications for rail stimulus are in and now the states that applied are waiting on the Federal Railroad Administration's picks for approved projects. We look at the world's five fastest trains—inspirations for the future of high speed in the U.S.

Professional bike race teams turn high-tech to mod their rides for the Tour de France, but they're not the only ones who benefit from the bike manufacturers' R&D, as new technologies become available for high-end consumer bicycles as well. (Published in the June 2009 issue)

Months may pass before we know exactly what caused one train on the DC Metro's red line to slam into the back of another, jackknifing on top of it. When investigators find out more, this week's crash will join other crashes scattered through the years that taught train operators valuable safety less...

Inventor Geoffrey Pyke once proposed building ships out of ice to patrol the North Atlantic for the British War Office. The Mythbusters see if a ship made out of ice and sawdust—or, in this case, newspaper—is seaworthy. (Published in the May 2009 issue)

MIT lecturer Andrea Frank spent four years traveling the world in search of the world's watery freight carriers, taking some 2300 photos in about 15 different ports. Now, her photography is on display at MIT Museum's Compton Gallery.

After the I-35W bridge collapsed last year, experts doubted that its replacement would open by the Dec. 2008 deadline. Instead, the next-gen bridge opened several months early and should set an example for urban planners everywhere.

A new generation of animal detection systems, many of which evolved from technologies designed for military and private security systems, is aimed at alerting oncoming cars to would-be roadkill before it ends up in their headlights.

The Martin Jetpack, like the three rocket belts before it, took off this month in a surge headlines. Could the new battle finally spell takeoff for this futuristic industry—or just more prolonged promises?

From jet engines to flotation devices, these bikes are the fastest life on two wheels without a motorcycle license. Each inventor shared their secrets for your own weekend project, but try this at home only after taking serious precautions.

It’s the megaengineered geek machine everyone loves to hate. But with prices soaring at the pump, Segway sales are up at least 25 percent—and counting. Could personal transporters save gas and stop WMDs?

Out of service for 40 years, the SS United States still holds speed records. But what fate awaits this storied piece of naval history? (Published in the June 2008 issue)

American infrastructure is in trouble, from collapsed bridges to leaking dams. In a yearlong investigation, Popular Mechanics uncovered the fresh ideas, smart engineering and new technology we need to fix it. Here’s the plan. (Published in the May 2008 issue)

It didn't take long out of the gates for the Suntory Mermaid II to prove its maiden voyage a success, since the goal of the journey is to prove that a boat relying solely on eco-friendly wave power can operate outside the confines of a lab.