Scientists Tinker with Neurons to Turn Lovers into Fighters

It would be nice to know how and why aggression occurs. It would give us better insight into everything from international war to schoolyard bullying. New research in mice suggests that estrogen may be more important than testosterone in modulating aggressive behavior, and that sex and aggression may be intimately… »5/07/14 10:49pm5/07/14 10:49pm

Of Flies And Men: What Scientists Are Learning About Insect Aggression

If you look really closely next time a group of fruit flies invades your kitchen, you might notice that some flies fight more than others. Male fruit flies, Drosophila melanogaster, are more aggressive than females, and the latest research from David Anderson's Caltech biology lab suggests that's because they have a… »3/20/14 6:48pm3/20/14 6:48pm

Research Suggests That Left-Pawed Dogs Are Just Slightly Evil

You probably already assumed that left-pawed dogs — and yes, some dogs do have forepaw and even hindquarter preferences — are ever so slightly evil, but now there’s a scientific study in the Journal of Veterinary Behavior to confirm your suspicions that left-pawed dogs are scheming to bark at you and make you seem… »6/02/13 2:32pm6/02/13 2:32pm

Why you shouldn't challenge a breast-feeding mom to play Call of Duty

When you happen upon a couple of bear cubs in the woods, what's the first thing that should come to mind? If you answered "I wanna squeeze 'em," you're wrong. It should be "where's the mom?" And with good reason. Numerous non-human mammals are known to exhibit heightened levels of aggression in defense of their young. »8/30/11 8:20pm8/30/11 8:20pm

This is what it looks like when a bullet shatters a strawberry

Every once in a while, especially on a Monday, you have to visit Alan Sailer's Flickr stream. He's the master of using high speed photography to capture images of pellets from a pellet gun hitting everything from frozen strawberries to Christmas ornaments (actually, he has a special section devoted to "the war… »5/23/11 11:30am5/23/11 11:30am

Scientists use gene therapy to control fighting and sex

You control your urges for violence and sex using a tiny tangle of neurons located in a very ancient part of your brain. Now it turns out that this knot of nerves, located in the hypothalamus, can be controlled with a new gene therapy technique that uses flashes of light. What this means is that scientists may be on… »2/09/11 7:00pm2/09/11 7:00pm

Brain Scans Reveal that Teen Bullies Get Pleasure from Your Pain

When a bully picks on you, you might get consoled by grown-ups who say things about how he's just jealous or trying to get your attention. But now a group of psychiatry researchers at the University of Chicago have revealed the true reason behind bullying: That bully beats you up because he enjoys it. Healthy kids'… »11/07/08 10:40am11/07/08 10:40am