There has been some speculation that circumcised males are less sensitive than uncircumcised men due to the absence of the alleged most sensitive part of the penis-the foreskin, but a recent study suggests that there is not much difference in the penile sensitivity of circumcised and intact.
Warmer climates are yielding more female hatchlings, researchers explain in a new study. This could have serious impacts on the survival of struggling loggerhead sea turtle populations in Florida.
Female butterflies choose their mates based on smell. However, some male hairstreak butterflies have evolved without scent-producing organs, which puts them at a disadvantage.
Stegosaurus were known for their spiked tails and armor-like exterior, and new research shows that their iconic bony plates may have determined the sex of these dinosaurs, according to new research.
Using a certain type of "transgender" green algae, scientists have discovered the genetic origin of male and female sexes, showing how they evolved from a more primitive mating system into a single-celled relative.
There is a reason that hurricanes Sandy, Irene and Katrina are in the history books as some of the most deadly and destructive: they are named after women. According to new research from the University of Illinois, hurricanes with feminine names are likely to be more deadly than their masculine counterparts, apparently because female-named storms are perceived as less threatening.