Contents

07 December 1990
Vol 250, Issue 4986

About The Cover

Topics spanning the spectrum of physical, life, social sciences, and technology will be presented at the AAAS Annual Meeting, 14 to 19 February, in Washington, DC. A small sampling of slides from one of the more than 200 symposia, technical sessions, and workshops is depicted on the cover (courtesy of K. Dunlap and P. Brehm, D. E. Morse, and R. B. Silver, whose work will be presented at the symposium on “New Perspectives in Cellular Signaling”). The meeting will also include plenary lectures, a special seminar on the neurosciences, poster sessions, exhibits, short courses, and an employment exchange. For details, see page 1437.