At the Roslin Institute in Edinburgh, Scotland, Dr. Keith Campbell, director of embryology at PPL therapeutics in Roslin, and his colleague Dr. Ian Wilmut worked together on a project to clone a sheep, Dolly, from adult cells. On February 22, 1997, they finally succeeded. Dolly was the only lamb bor...

 To Clone or Not to Clone? In February 1997, when Dr. Ian Wilmut and his team of scientists in Scotland astonished theworld by announcing that they had successfully cloned a sheep, it sparked an internationaldebate. Since the invention of Dolly, scientists have been fa...