-the study of climate and its impact. She describes past efforts to determine how changes in climate have influ- enced human history. Today, Steven Lagerfeld's survey of the re- search indicates, most climatologists think that the "greenhouse ef- fect" is here to stay. They believe that mankind can learn to live with a slight "global warming," and may be able to avert more radical shifts in temperature and rainfall.
Climate, along with the stars and the tides, is one of the...