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

Do these startling longevity studies mean your lifespan could double?

Biologists have successfully extended the life spans of some mice by as much as 70%, leading many to believe that ongoing experimentation on our mammalian cousins will eventually lead to life-extending therapies in humans. But how reliable are these studies? And do they really apply to humans? We asked the experts. »4/30/13 4:15pm4/30/13 4:15pm

Mighty mouse attacks venomous snake to free its fellow mouse

Just because you're prey, that doesn't mean that you have to take being eaten lying down. At Hangzhou Zoo in Zhejiang province, eastern China, zookeepers witnessed an unusual sight after two live mice were placed in a snake's enclosure for supper. As the snake started to eat one of the mice, the other began biting the… »3/09/13 8:00pm3/09/13 8:00pm

Animal-Shaped Armor for the Eternal Battle of Cats vs. Mice

Jeff de Boer's elaborate suits of armor imagine a fanciful world in which cats and mice have learned to smith metal and construct for themselves often ornate suits of armor. Through the years, he's expanded his visions of animal armor, creating armor inspired by Medieval times, Ancient Rome, the Renaissance Era, and… »1/27/13 12:00pm1/27/13 12:00pm

This thimble-sized microscope could revolutionize neuroscience research

Mice are energetic little buggers, which is bad news for scientists who want to get a look at their brains while they're scurrying around. But at last, researchers have perfected a high-powered, miniaturized fluorescent microscope that can be mounted on a mouse's head and used to monitor the activity of as many as 200… »9/14/11 2:00pm9/14/11 2:00pm

Mice have evolved immunity to poison in a very unusual way

For anyone who has to deal with rodent infestations, getting rid of the small, gnawing animals can be rough — so much so that many people immediately head for poison. However, it's not quite as easy as that. Some mice have obtained immunity to Warfarin, a common rodent poison, via a very unusual route: horizontal… »7/21/11 3:30pm7/21/11 3:30pm

Trying to treat stress, scientists may have accidentally stumbled on a cure for baldness

Your body responds to stress in many ways. It gives you bursts of energy, and a reduced response to pain. It lets you run faster and farther. It also entirely messes you up. Stress releases a battery of hormones that give you superhuman abilities, and they all have down sides. Many of them result in bone density loss… »2/17/11 9:30am2/17/11 9:30am

Wipe your short-term memory, but leave long-term learning intact

The hero in Memento had a certain condition that prevented him from making new memories. He couldn't remember the start of a conversation by the end of the conversation. He couldn't remember who a person was, if that person had introduced themselves to him a few minutes before. When he learned a new fact, or phone… »2/02/11 9:30am2/02/11 9:30am