First study to analyse rates of full vs half siblings in a range of mammals provides new evidence for monogamous behaviour in humans compared to other animals.

Not being 12, one of the more interesting things about this study is that a 20 year old MRI machine could capture images of moving subjects. In the majority of depictions of MRI use, patients are ...

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 ...

We can quickly dismiss the claim that copulation during pregnancy is unique to humans. It is easy to understand how this myth originated. Copulation after conception seemingly serves no useful ...

When I ran the video, at the end Youtube made a number of suggestions of related videos, including "Threesomes with escorts." Apart from wondering how the algorithm works, it did occur to me you'd ...