Watch Modern Marvels S17E07
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, ... (more)anyone?. You can watch Modern Marvels S17E07 here.