When scientists opened the doors of a research facility and let carefully bred lab mice loose into a fenced field, they expected skittish, fragile animals to struggle. Instead, the mice rapidly shed ...

In the wild, a mouse or rat leads a precarious life. In the city, they dodge traps, poisons, and broom-wielding humans. In the countryside, they face owls, shotguns, and more poison. As Australia’s ...

Physically and behaviorally, few creatures have been measured, tested, and probed as much as the laboratory mouse. Yet what do scientists know about making mice happy or free of pain? Often, the ...

Last year, in July, Reine Protacio’s experiments suddenly stopped working. Every scientist encounters baffling results from time to time; you chalk it up to error, repeat the experiment, and hope for ...