Whether NASA's policy might change won't be clear until a new
planetary protection chief is installed, and after the National Academies panel and special regions workshop have weighed in.
He served as professor of environmental sciences at the University of Virginia, Charlottesville, VA (1971 — 94); distinguished research professor at the Institute for Space Science and Technology, Gainesville, FL (1989 — 94);
chief scientist, U.S. Department of Transportation (1987 — 89); vice chairman of the National Advisory Committee for Oceans and Atmosphere (NACOA)(1981 — 86); deputy assistant administrator for policy, U.S. Environmental
Protection Agency (1970 — 71); deputy assistant secretary for water quality and research, U.S. Department of the Interior (1967 — 70); founding dean of the School of Environmental and
Planetary Sciences, University of Miami (1964 — 67); first director of the National Weather Satellite Service (1962 — 64); and director of the Center for Atmospheric and Space Physics, University of Maryland (1953 — 62).