VIDEO: Shigeru Ban: Emergency shelters made from paper

Long before sustainability became a buzzword, architect Shigeru Ban had begun his experiments with ecologically-sound building materials such as cardboard tubes and paper. His remarkable structures are often intended as temporary housing, designed to help the dispossessed in disaster-struck nations such as Haiti, Rwanda or Japan. Yet equally often the buildings remain a beloved part of the landscape long after they have served their intended purpose. (Filmed at TEDxTokyo.)

Most people look at cardboard tubes and see something fit for the recycling bin. But architect Shigeru Ban turns them into beautiful buildings.