The past few years have seen many changes in the field of genetics, including the ability to genetically clone mammals, first achieved in 1997 with a sheep named Dolly. Still a relatively new phenomenon, news stories are continually detailing new advances in cloning, reasons why cloning is important, and concerns about the safety and ethics of cloning. This week's Topic In Depth highlights some...

Dolly, the world's first animal to be cloned from an adult cell, was put down February 14, 2003, due to a tumor in the lung. Her death has drawn increased attention to how little we really know about the potential health problems associated with genetic cloning. The journal Nature offers a special Web focus on "the life of this extraordinary sheep," including current and archived news articles and...

The Roslin Institute first reported their breakthrough cloning results in Nature (February 27, 1997; volume 385, part 6619, pages 810-813--discussed in the March 7, 1997 Scout Report), presenting possibilities for pharmaceutical purposes in addition to research opportunities. The cloned lamb, Dolly, was created using nuclear transfer technology. This site covers one of the top ten scientific...