Space Shuttle Flight Director Talks About Return to Flight

As Flight Director for STS-114, Paul Hill is in the hot seat for the 'Return to Flight' launch of space shuttle Discovery. He provides a status report on the mission. Astronaut and scientist Owen Garriott also considers Return to Flight, and looks ahead to the future of humans in space. Emily Lakdawalla returns to Q&A with a cometary bonanza, and Bruce Betts has a special guest on What's Up: Bill Nye the Science Guy.