There are key differences in how men and women respond to stress and process emotions and events through the nervous system.

A newly published study has found that males of some of our earliest known ancestors were significantly larger than females.

Sharks and rays have been found to have an XY sex chromosome system superficially like our own, but with its own unique ...

Naloxone (also known as Narcan, the commonly used drug to treat narcotic overdoses) has greater binding to opioid receptors ...

These misunderstood, wandering arachnids are often simply young males in search of love. Here's where you might see them in ...

When male crickets lose their song, female crickets interact differently. Song makes them social, especially if they have the ...

Ladybugs are famous for their black spots and red wings, but can you tell the difference between males and females? The ...

Within the last decade or two, the vast majority of Hawaiian field crickets (Teleogryllus oceanicus) have lost the ability to ...