Inventory of U.S. greenhouse gas emissions and sinkd : 1990-1993 U.S. Environmental protection and evaluation

Front cover: Photograph obtained form NASA. The photograph was taken by STS 39 Crew of the discovery(launched April 28,1991 from Kennedy space center and completed on May 6, 1991)and depicts the atmosphere surrounding the Earth's surface. a sunset highlights the thin layers of gases and particles that shield the planet.