Recent research has revealed dark surprises and yielded a radically new scenario of how AIDS began and spread. Excerpted and adapted from the book Spillover, with a new introduction by the author, Quammen's hair-raising investigation tracks the virus from chimp populations in the jungles of southeastern Cameroon to laboratories across the globe, as he unravels the mysteries of when, where, and under what circumstances such a consequential "spillover" can happen. An audacious search for answers amid more than a century of data, The Chimp and the River tells the haunting tale of one of the most devastating pandemics of our time.

    According to this false-yet-familiar story, the divisions between men and women are in nature alone and not part of culture. Drawing on evolutionary science, psychology, neuroscience, endocrinology, and philosophy, Testosterone Rex disproves this ingrained myth and calls for a more equal society based on both sexes’ full human potential.

     Whether eating, taking drugs, engaging in sex, or doing good deeds, the pursuit of pleasure is a central drive of the human animal. In The Compass of Pleasure Johns Hopkins neuroscientist David J. Linden explains how pleasure affects us at the most fundamental level: in our brain. As he did in his award-winning book, The Accidental Mind, Linden combines cutting-edge science with entertaining anecdotes to illuminate the source of the behaviors that can lead us to ecstasy but that can easily become compulsive. Why are drugs like nicotine and heroin addictive while LSD is not? Why has the search for safe appetite suppressants been such a disappointment? The Compass of Pleasure concludes with a provocative consideration of pleasure in the future, when it may be possible to activate our pleasure circuits at will and in entirely novel patterns.