On the Internet

in 1991, NASA launched the Earth Science Enterprise, a comprehensive program to study how the Earth’s systems of air, land, water and life interact. The Web site offers background information on the space agency’s Earth Science Enterprise program and a host of resources including data and publications at www.terra.nasa.gov/ To view the site where Terra data have been broadcast directly since March 17, go to rsd.gsfc.nasa.gov/eosdb/