Modern Marvels: Season 17, Episode 7 - ProjectFreeTV

17 - 7:

Our 49th state is one tough terrain. In the air, on the ground--and deep beneath it--survival here requires an amazing array of technological innovations. From buildings to highways, brutal winters to bug-infested summers, this unforgiving landscape demands creative work-arounds. And then there's the constant threat of natural disasters...tsunami, anyone?