Babies and Morality

In the Times Science section today, Natalie Angier discusses a fascinating-sounding new book, by the primatologist Sarah Blaffer Hrdy. The book, "Mothers and Others," argues that humans evolved a powerful set of moral instincts - a set of instincts that far exceed those of our primate relatives - because we depend on others to help us rear our helpless infants:

As Dr. Hrdy argues in her latest book, "Mothers and Others: The Evolutionary Origins of Mutual Understanding," which will be published