That’s what the biologist Jeanne Altmann found studying baboons in the wild. The baboon mothers, through social hierarchy and grooming, formed networks of female friendships to “protect their ...

Front Row, from left to right: Jeanne Altmann, Diane Brockman, Linda Fedigan, Karen Strier, Susan Alberts, and Bill Morris. This image relates to an article that appeared in the March 11 ...