How male and female brains diverge is a hotly debated topic, but the study of model organisms points to differences that cannot be ignored.
April 6, 1987
LONDON—Researchers around the world foresee few practical repercussions from last month's Papal instruction that bans in vitro fertilization and other procreative procedures not involving sexual intercourse. An informal worldwide survey by The Scientist found some concern that politicians might seek to obey the Vatican's injunction to embody the new Catholic doctrine in civil law, but most political commentators consider this very unlikely. In Ireland, Tony Walsh, who runs the IVF and GIFT