8/03: Jobs created, jobless rate remains high; "7 minutes of terror" for Mars mission

      |As the stubborn jobless numbers reflect, more than five million Americans have been out of work for at least six months. And, as Rebecca Jarvis reports, with so few job openings, the competition is fierce; And, the most complex and expensive robot ever sent to Mars is expected to arrive on the surface of the Red Planet early Monday morning. As John Blackstone reports, NASA scientists will be on the edge of their seats as the spacecraft makes its landing.

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