Shuttle Improvements Set to Cost $280 Million

NASA has estimated that implementing the improvements to the space shuttle fleet suggested by the Columbia Accident Investigation Board will set the agency back $280 million USD. One problem that NASA still hasn't found the solution for is how to give astronauts the ability to repair holes in the wing, like the one that brought down Columbia. The agency is soliciting suggestions from outside as well; since November 12, they've received 286 suggestions - mostly from the public.