Modern Marvels: Season 17, Episode 6

17 - 6:

Shoes have come a long way from their humble beginnings as simple leather moccasins. Today footwear is built to withstand any extreme environment where a foot can tread -- from the heart of a burning building to the track of an Olympic stadium. From high-tech soles to shoelaces, cowboy boots to sneaker design -- step behind the scenes with the products that keep your feet covered.