Joseph A. Nuth III has been head of the Astrochemistry Branch at NASA’s Goddard Space Flight Center since 1990. He often retreats to the laboratory to conduct experiments designed to further our understanding of the behavior of solids in astrophysical environments. He obtained B.S. degrees in astronomy and chemistry, an M.S. in geochemistry and a Ph.D. in chemistry from the University of Maryland at College Park. Following several years as an NAS/NRC Resident Research Associate at NASA Goddard and as an NAS/NRC Research Management Associate at NASA Headquarters, he joined the civil service at Goddard in 1986 as an astrophysicist. Address: Laboratory for Extraterrestrial Physics, Code 691, NASA Goddard Space Flight Center, Greenbelt, MD 20771. Internet: u1jan@lepvax.gsfc.nasa.gov