Number 61 (Story #5), January 3, 1992 by Phillip F. Schewe and Ben Stein PHYSICS NEWS IN 1991 , the annual review of physics highlights, is now available from the AIP Division of Public Information. Some of the leading topics include Buckyballs, new STM innovations, femtochemistry, Gamma Ray Observatory discoveries, 17-keV neutrinos, and visible light from porous silicon.