A rugged ship built to withstand tsunami size waves travels on a highway unlike any other in North America. A fleet of machines combats a massive flood in the Arctic Circle. And the biggest, most powerful wind turbines in Alaska.

Source: Science Channel

On the remote island of Sitka, Alaskan engineers construct a gargantuan dam to power the entire town. Ride shotgun on a dangerous mission on the world's largest helicopters. And, Alaska's biggest boat lift hauls a 400-ton fishing ship in high winds.

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