NASA researchers will present new findings on a wide range of Earth and space science topics during the 2009 fall meeting of the American Geophysical Union. The meeting takes place Dec. 14-18 at the Moscone Convention Center, 747 Howard St., in San Francisco.

News briefings held during the meeting will feature new results on dwindling groundwater supplies in California and other parts of the world, the impact of the current "quiet" solar cycle on Earth's atmosphere, efforts to track near-Earth objects such as comets and asteroids, and satellite views of the global circulation of greenhouse gases. In addition, NASA scientists and their colleagues who use NASA research capabilities will present noteworthy findings during scientific sessions that are open to registered journalists.

For a complete list of NASA-related news briefings at the meeting, visit:

The Web site contains detailed information about how reporters can participate in the briefings, both on-site and remotely. The site will be updated throughout the week with additional information about NASA presentations.

For more information about NASA and agency programs, visit: