Scientists reported a breakthrough in creating synthetic human embryos without the use of eggs or sperm but now face legal and ethical issues. They claim to have created model embryos using stem cells ...

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 ...

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 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 ...

After years of fiddling with human, mouse, rabbit, and cow cells, researcher Robert Lanza has declared that it's impossible to create human-animal hybrid embryos, but that human cloning appears to be ...

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, ...