The full-text of several books authored by University of Washington professor William H. Calvin are available online. His newest book A Brain for All Seasons (A Scientific American book of the month) is about "what sudden climate flips did to human evolution over the last 2.5 million years." Most of his other books also focus on the subjects of the brain and human evolution. The hyperlinked table of contents makes browsing these texts more manageable. This Web page also includes other information about Calvin, including research, lectures, and shorter articles.