This leads to the fourth and most promising possible solution to the problem of intergroup conflict, that is, the emergence of a single pluralistic world society, in which there will be ample provision for individual and group differences, but not on the basis of relatively independent culture groups. (religion-online.org)
«This provides evidence for the hypothesis that gender differences in intergroup conflict can have an evolutionary origin, as only males seem to benefit from displaying heroism,» says Joost Leunissen, a psychologist at the University of Southampton and co-author of the study. (sciencedaily.com)