Worried about genetically modified organisms, and GM food? Well, a number of scientists are pursuing the genetic modification of humans, altering DNA sequences that will be passed along to future generations. According to Stuart Newman, inheritable genetic engineering is deeply problematic; he argues that its proponents misunderstand the nature of living things and the process of human evolution.

Conventional wisdom has it that humans are monogamous, aggressive, and innately warlike. But what if we're as much wired to be polygamous, peaceful, and egalitarian? Drawing on his own work with primates, anthropologist Agustín Fuentes discusses a number of myths about sexual differences, monogamy, aggression, and race -- all justified by misconceptions about evolution and biology.

Is it correct to say that Charles Darwin was a scientist par excellence, and that his theories were rooted solely in empirical study? Or might there have been another side to Darwin, a moral passion that spurred his research on evolution? James Moore contends that Darwin's obsession with human origins was fueled by his contempt for slavery.