Design For The Real World: Tsunami Shelter

One of the most urgent design problems on the planet is how to shelter the millions of people displaced by the tsunami disaster in South Asia. When resources for construction are limited, refugee camps can easily turn into semi-permanent cities where survivors spend years under tents in awful conditions. But while the UN's refugee agency is still distributing plastic tarps for emergency shelters, committed designers are trying to figure out how to rebuild homes that last. Dave Johns has the story.