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Methods

Image by Franklin.vp, CC BY-SA 3.0

Group Behavior Among Animals

The information that animals take in—combined with the signals they outwardly project—has enabled the formation of groups and group behavior. This development can be traced throughout the Animal Kingdom from early times to the present.

A mountain road in Ethiopia, photo by Clay Knight/Unsplash

Ethnic Groups Make History

In his new book, historian James Quirin examines the oral traditions, cultural practices, and written records of the Beta Israel, a community of farmers and artisans who lived near the Ethiopian kingdom. Quirin uncovers a lively historical record, showing how small ethnic groups can create significant historical change.

Jaw bone of a gazelle from Jebel Irhoud, Morocco. Photo by Teresa Steele/UC Davis

How Are Ideas About Evolution Evolving? Part One

When and how did Homo sapiens become a species? What are the roles of subgroups and migration in human evolution? The first in a three-part series, this post reviews six main categories of human evolutionary change and considers how each of them might lead to unification and/or differentiation of the human species.