The strange world of spider sex: it's a popular subject among researchers because, well, it will certainly keep you guessing. That's pretty much how things went recently for a team of scientists studying the Darwin's bark spider (Caerostris darwini), after discovering that males may be performing oral sex to keep females happy and - most importantly - not wondering what their mate might taste like.
It's no secret that for spiders and many other predator bugs, reproduction can quite literally involve courting death. The black widow, infamous as its own widow-maker, is one of the most iconic cannibal spiders around. Now a new study has revealed that male black widows have a fighting chance. They can smell if a female is hungry, helping them decide if courting her is worth the risk.
About 385 million years ago, a pair of ancient Scottish fish did a jig that was somewhat like square dancing, and now scientists are saying this was actually the awkward origin of sex.
We all know that men are from Mars and women are from Venus, and a new study supporting this way of thinking shows that male brains - at least in nematodes - are wired to choose sex over food, whereas the same doesn't ring true for females.
Experts have long thought that the pelvic bone that floats unattached to the rest of a whale's skeleton is simply an evolutionary throwback from when their ancestors boasted four flippers. Now, researchers argue that whales actually are using this seemingly useless bone for very specific mating purposes.
If, on what must have been a very lazy afternoon, your mind has turned to wondering how some blind worms can tell the difference between their own species and another, your answer is finally here! The truth is, they can't - an honest mistake that can prove deadly according to a recent study.
In a disturbing new study, nearly one in 10 of the 14- to 21-year-olds surveyed reported coercing or forcing an unwilling partner into a sexual act, researchers found.
The human papillomavirus (HPV) vaccine is proving effective in the United States since it was first introduced in 2006, with a new study saying teen girls infection rates are down by 56 percent.
Perceptions that young adolescents are more sexually active today than in the past is largely unfounded, according to a report in the April issue of the journal Pediatrics.