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.

The embryos would not be used for reproduction, but rather for the creation of embryonic stem cells. Many scientists believe that human embryonic stem cells made this way could revolutionize medicine.

Harvard researchers said yesterday they have asked the university's ethics boards for permission to create cloned human embryos for medical research, marking the first push to conduct such ...

A controversial fertility doctor claims to have successfully cloned human embryos and implanted them in women's wombs. It didn't result in any viable pregnancies, but raises ethical questions ...

Scientists say they have, for the first time, cloned human embryos capable of producing embryonic stem cells. The accomplishment is a long-sought step toward harnessing the potential power of ...

SAN FRANCISCO -- Just a few years ago, Michigan State University scientist Jose Cibelli was considered the leading expert on cloning human embryos to treat and study disease. Now, there's no ...

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 refereed to as clones. For various ...

Dr. Michael West, president and CEO of Advanced Cell Technology, talks in Washington on Sunday about cloning the first human embryo. BOSTON -- A research company reported Sunday it had cloned the ...

A U.S. company says it's cloned a human embryo -- the breakthrough is aimed not at creating a human being but at mining the embryo for stem cells.

Cloning, moreover, is essential to foreseeable endeavors such as the genetic engineering of embryos, the creation of human/animal chimeras, the gestation of cloned fetuses in artificial wombs as a ...

After outlandish claims, a few media circuses, and some near misses by legitimate researchers, a team of South Korean researchers reports the production of cloned human embryos. The findings, to be ...

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 ...