World Book 1987, Annual Science Supplement. Cumulative index of topics for the year 1986. Some topics are: The monarch butterfly, galaxies, eating habits such as anorexia nervosa and bulilia, lightening, Madagascar, computer imaging, AIDS, Mars, lasers, the brains' right and left side, archaeology, 3-D maps of earth, Grace M. Hopper, pioneer in development of computers; Max Planck Society, and others.