What private companies could mean for NASA space exploration

It's been nearly a decade since an astronaut was launched into space from American soil. Wednesday, at Cape Canaveral Florida, the company SpaceX and NASA tried to end that streak on board the Falcon 9 until weather scrapped the launch. The World's Marco Werman speaks with Margaret Weitekamp, head of the space history department at the Smithsonian National Air and Space Museum, about the future of US space flight.