While monogamy is a cornerstone of many societies and relationships, a quick look at the animal kingdom—and even human history—shows a much more diverse picture of mating strategies. So, is monogamy ...

Mating calls and rituals can be intercepted, or drowned out, by invasive species. Scientists are just starting to understand the consequences.

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 ...