When laboratory mice step out of their plastic cages and into real soil, their behavior changes so dramatically that it forces a rethink of what stress, health and even “normal” really mean. The story ...

Scientists have advanced human-animal chimera research by successfully growing human cells within the organs of mice. This development could bring experts closer to the goal of custom-growing human ...

The online admonition to "touch grass" to soothe your emotional state may be backed by science — at least in lab mice. A recent study finds that mice that live outside are less anxious than those that ...

Research conducted last year shows that mice who intake less of a specific amino acid appeared to live up to 33 percent longer than mice that had more of the amino acid. If the research findings hold, ...

This is SCIENCE FRIDAY. I'm Flora Lichtman, filling in for Ira Flatow this week. Last week, when Hurricane Sandy sent a surge of salty water into cities and towns up and down the East Coast, among the ...

As a researcher, I still remember the discomfort I felt every time I had to sacrifice laboratory animals for an experiment.

Purified diets have long been used in lab animal research. But a recent argument posits that there may be a reason why successful animal research doesn’t always translate into the same clinical ...