Well, at least in the chimp world. According to the study reported at Live Science the reason why male chimps don’t have a preference for younger females is that chimp women don’t go through menopause, and don’t bother with partnerships, so they are reproductive longer. As for why the older is actually better, this is not entirely clear yet.

A study reported by the BBC shows that those living in the western world have on average more sexual partners than those living in the developing countries. This perhaps goes somewhat against the picture painted by AIDS many reports that sometimes seem to all but suggest that many African countries are like huge Playboy mansions where anything goes.

In reality, the London School of Hygiene and Tropical Medicine researches suggest that “factors such as poverty and mobility had more of a role in sexually transmitted infections than promiscuity had”.

I’m not sure if it comes as a news to anyone, but men infer sexual interest before women do.

ABC News (the American, not the Australian, ABC) has a somewhat popularised but nevertheless a fun-to-read article about why and how blonde hair and blue eyes probably came to be.

Like most of us, I spend a lot of time thinking about sex. You know, questions like in what way does sex make evolutionary sense? Why aren’t we asexual? (And if we were, how much smaller would, say, the sales figures of Britney Spears albums be?) Although I cannot really answer these questions, here is an interesting news article about a recent research that tried.

“Scientists have identified the hormone changes which cause the switch from lust to cuddles.” BBC News