All in Your Genes

Scientists at Case Western Reserve University have genetically engineered mice that outrun, outlive, and out-eat ordinary mice while staying lean, light, and fertile well into old age.

Mighty mouse!

Running on special treadmills designed for mice, the genetically engineered mice left ordinary mice in the dust.

Sounds like something from a sci-fi movie.

The genetically engineered mice ate 60% more than the ordinary mice, but they were lean and light, weighing half of what normal mice weigh with 90% less body fat.

Give me some of that.

A major unanswered question, Hanson's team notes, is what brain changes accompany the genetically engineered mice's hyped-up activity.

My guess is the mice can't resist passing by a mirror without taking an admiring look . . .