Even the tiny, mild-mannered fruit fly can be a little mean sometimes – especially when there's a choice bit of rotten fruit to fight over. And, like people, some flies have shorter tempers than ...

A group of researchers made gene-edited hamsters that were meant to be less aggressive. The researchers used CRISPR, a gene-editing platform, to remove a gene they believed was responsible for ...

A simple, freely available analysis tool and hardware for analyzing fruit flies allows opportunities for researchers in low-income settings or out in the field to screen for genes and nerve circuits ...

What causes some individuals to act out violently when provoked, while others turn the other cheek? For decades, psychologists, criminologists, and sociologists (among others) have tried to understand ...

Toxic masculinity is a major societal concern. It is said that testosterone from the testes makes men overly aggressive. But the biology of hormones and aggression is not that simple. A symposium ...