Astronaut who spent a year in space discusses readjusting to life back on Earth

Astronauts of the future could be sent on missions to the moon and Mars that take years, but living in space that long poses all kinds of physical and psychological challenges. NASA is trying to learn as much as it can from astronauts who have spent the most time in space. Science correspondent Miles O'Brien spoke with the American who set the record for longest single space mission.
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