Lyme disease, and SARS. According to Walters, we are not only victims of these emerging diseases; we are helping exacerbate their creation and spread.

    Worked examples and exercises support the text. An ELBS/LPBB edition is available.

    This edition contains significant additional material on early mining in the Pacific Northwest, sea routes to Oregon in the early discovery and contact period, the environment of the region, the impact of the Klondike gold rush, and politics since 1945. Recent environmental controversies, such as endangered salmon runs and the spotted owl dispute, have been addressed, as has the effect of the Cold War on the region’s economy. The author has also expanded discussion of the roles of women and minorities and updated statistical information.