Humans are far closer to meerkats and beavers for levels of exclusive mating than we are to most of our primate cousins, according to a new University of Cambridge study that includes a table ranking ...

Evolutionary theory has a lot to say about sex and relationships and can often explain mating phenomena in a way that no other theories can. Here are five key evolutionary theories that are the ...

The white-handed gibbon comes closest to humans in the study, with a monogamy rate of 63.5%. It’s the only other top-ranked ...

Based on: Marriage and Genetics: Laws of Human Breeding and Applied Eugenics. By Charles A. L. Reed, M.D., F.C.S. The Carlton Press, Publishers, Cincinnati, Ohio. 1913.