The current passion for a “theology of ecology” got its chief start with the appearance in Scietice in March, 1967, of an article titfed- The Historical Roots of Our Ecologic Crisis.“ Its .author, medieval historian Lynn White, Jr., of UCLA, is an engaging raconteur with a gift for the memorable phrase and the arresting thought. He is professionally adept at rummaging through heaps of historical scraps and making sense of them, frequently rather novel sense. Specializing in the development of technology in the Middle Ages, he links happenings from seemingly different realms, particularly ideas and artifacts, so that once familiar history suddenly looks quite different, rather like the shock one gets when old stories of kings and armies and conquests are retold from the medical point of view.