Science, Maintenance for Station Crew

(NASA) – As the rest of the Expedition 22 crew prepares for its launch to the International Space Station, the crew onboard the orbiting laboratory continued its normal science and maintenance activities Monday.
Commander Jeff Williams worked with the Environmental Health System Gas Chromatograph/Differential Mobility Spectrometer, part of the station?s air quality monitoring system that [...]

Full story at http://spacefellowship.com/2009/12/15/science-maintenance-for-station-crew/