The embryos would not be used for reproduction, but rather for the creation of embryonic stem cells. Many scientists believe that human embryonic... In a first attempt (top), researchers removed an ...

US scientists involved with a small company set up by an unnamed investor report they are the first to clone human embryos and prove it. But some researchers are asking how much of a scientific ...

For some time, scientists have been able to craft precise genetic copies of many creatures. Whether they are animals, or single cells, they are similarly referred to as clones. For various technical ...

Human cloning has been used to produce early embryos, marking a "significant step" for medicine, say US scientists. The cloned embryos were used as a source of stem cells, which can make new heart ...

Stanford University announced yesterday it would create an institute to develop medical therapies from human embryonic stem cells, the promising but controversy-laden cells found inside human embryos.

WASHINGTON -- The announcement by a U.S. company that it has cloned a human embryo for the first time has set off a heated debate on the ethics of the research, with the company on Monday staunchly ...

NEW YORK — Scientists have finally recovered stem cells from cloned human embryos, a longstanding goal that could lead to new treatments for such illnesses as Parkinson’s disease and diabetes. A ...

LONDON -- A maverick Kentucky scientist Saturday said he successfully made a cloned human embryo and transferred it to the womb of a 35-year-old woman. But many scientists met the claim with ...

A Feb. 9 article incorrectly referred to Richard Doerflinger of the U.S. Conference of Catholic Bishops as the organization's director of abortion-opposition activities. Doerflinger's title is deputy ...

The cloning of human embryos by South Korean researchers has reignited debate about how to regulate human cloning. No reputable scientist wants to make artificial babies. But, there is heated ...

Stepping into a research area marked by controversy and fraud, Harvard University scientists said Tuesday they are trying to clone human embryos to create stem cells they hope can be used one day to ...