Many problems in human society are often related to the interaction of environment and behavior or genetics and behavior. The fields of sociobiology and animal behavior deal with the issue of environment behavioral interactions both at an evolutionary level and a proximate level. Increasingly social scientists are turning to animal behavior as a framework in which to interpret human society and to understand possible causes of societal problems. (e.g. Daly and Wilson's book on human homicide is based on an evolutionary analysis from animal research. Many studies on child abuse utilize theory and data from studies on infanticide in animals.) My research on chimpanzees and monkeys will illustrate the importance of cooperation and reconciliation in social groups. This work will provide new perspectives by which to view and ameliorate aggressive behavior among human beings.