When Dolly the sheep – the first cloned mammal – was born 30 years ago, she became one of the most famous animals in science ...

When Dolly the sheep—the first cloned mammal—was born 30 years ago, she became one of the most famous animals in science ...

An entirely appropriate stew of scientific vexation and mortification has accompanied revelations that the incredible Korean achievements in human embryonic cloning and stem cell research are exactly ...

Scientists say they’ll go ahead anyway. Lawmakers, seeking to rein in the scientific appetite for human experimentation, are attempting to ban human cloning. On July 31, the House approved a bill, 265 ...

Dolly the sheep, the first cloned mammal, was born in Scotland in 1996. Her birth sparked global debate about the ethics and ...

(CNN) -- A human embryo, containing about a couple hundred cells, is smaller than the period at the end of a sentence. Scientists need strong microscopes to see these precursors to life, and to take ...

Scientists have used cloning to create human embryonic stem cells, a step toward developing new medical treatments, but one that might also hasten the day when it will be possible to create cloned ...

Scientists in Massachusetts said yesterday they had succeeded in creating the world's first cloned human embryos, a controversial advance intended to speed the development of new medical therapies but ...

Cloning is a biotechnological process that involves creating genetically identical copies of an organism or cell. In essence, a clone is an exact genetic replica of the original organism or cell, ...

SAN JOSE, Calif. -- As they spar over stem cell research, both President Bush and Sen. John Kerry say they want to develop the technique so it can cure such afflictions as Alzheimer's disease and ...