THE NATURAL WORLD
An Unsettled Forecast for Global WarmingBy MALCOLM G. SCULLYClimate science, Doug Macdougall writes, "is notoriously difficult, because there are so many interconnected variables at work that cause and effect are often impossible to discern with confidence." Those variables, which Macdougall discusses in Frozen Earth: The Once and Future Story of Ice Ages, published recently by the... Copyright © 2008 by The Chronicle of Higher Education Subscribe | About The Chronicle | Contact us | Terms of use | Privacy policy | Help |