Shigeru Ban: Emergency shelters made from paper

Long before sustainability was a buzzword, Pritzker Prize-winning architect Shigeru Ban had begun his experiments with ecologically sound building materials such as cardboard tubes. His remarkable structures are often intended as temporary housing for disaster-struck nations such as Haiti, Rwanda, Japan. Yet often the buildings remain a beloved part of the landscape long after they have served their intended purpose. (Filmed at TEDxTokyo.)