Healthcare Access and Stress: The Truth is in the Telomeres

A new study of telomeres in Mesoamerican women reveals that poor access to healthcare leads to chronic stress. … More Healthcare Access and Stress: The Truth is in the Telomeres

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The Value of Social Relationships During Aging in Female Rhesus Macaques

Rhesus monkeys have an intricate social structure. There is a dominance hierarchy, meaning that not all individuals enjoy the same rank in the group. This also effects the value that individuals gain from each of their relationships. Obviously, having powerful allies is of great value. And to maintain a powerful position requires allies. These are all … More The Value of Social Relationships During Aging in Female Rhesus Macaques

New Research Characterizes Mountain Gorilla “Friendships”

“I get by with a little help from my friends.” The more we look, the more we find. This is especially true when it comes to the social dynamics of animals. Scientists continue to document the complex nature of social relationships, particularly in birds and mammals. It seems we are constantly saying, “I didn’t know animals did … More New Research Characterizes Mountain Gorilla “Friendships”

Did Neanderthals Have Gender Roles in their Division of Labor?

It is not uncommon among social mammals to engage in division of labor between the sexes. Female lions do all of the hunting; males loaf around and occasionally fight other males. Chimpanzees have a strictly male-dominated social hierarchy, while bonobos employ a matriarchal structure in which dominance is enforced by females. These sex roles can … More Did Neanderthals Have Gender Roles in their Division of Labor?

Did a Drop in Testosterone Civilize Modern Humans?

 Summary Anatomically modern humans first appeared around 200,000 years ago, but small changes in skull shape continued until around 50,000 years ago. A new study has revealed that several of the changes in the shape of the human face can be explained by a gradual drop in the levels of circulating testosterone. High testosterone is … More Did a Drop in Testosterone Civilize Modern Humans?