Mapping Earth

Noah speaks with Tom Farr, Deputy Project Scientist with NASA's Jet Propulsion Laboratory in Pasadena, Calif. He's one of the members of Space Shuttle Endeavour's science team, which is working to create a topographic map of 80-percent of the earth, improving the resolution of current global topographic maps. It would be the world's most perfect map. He speaks with Noah from Houston, Texas.



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