“Although a high standard of morality gives but a slight or no advantage to each individual man and his children over the other men of the same tribe...an advancement in the standard of morality will ...

Review of A Different Kind of Animal: How Culture Transformed Our Species. By Robert Boyd. Princeton University Press. 229 pp. $27.95. Charles Darwin’s theories have stood the test of time. In The ...

"Group selection" is the controversial theory that natural selection operates not just at the individual level but also at the level of the social group. I recently participated in a conversation at ...

The authors "seem to be more concerned about disproving group selectionists than about parasite virulence," he said. The mathematics underlying both group selection and individual-level selection have ...