Twenty years ago today, a woolly little farm animal named Dolly was born. And she forever changed our sense of the possibilities of science. (SOUNDBITE OF ARCHIVED BROADCAST) SIEGEL: It is a rare ...

Today in History:On July 5, 1996, Dolly the sheep, the first mammal cloned from an adult somatic cell by scientists at the Roslin Institute at the University of Edinburgh, was born. Home delivery and ...

LONDON - The world's first cloned sheep has developed arthritis at the relatively early age of 5½ years, scientists said Friday, stirring debate that the current cloning procedures might be flawed.

LONDON (AP) _ Dolly the sheep, the world's first mammal cloned from an adult, was euthanized well short of her normal lifespan after being diagnosed with progressive lung disease, her creators said ...