In 2005, Teruhiko Wakayama, a pioneer of cloning at the University of Yamanashi in Japan, cloned a single female mouse. The results were as expected: The mouse that was born was genetically identical ...

Opponents of cloning say the announcement that Dolly the sheep has developed arthritis is just more evidence that scientists know more about how to make a clone than they do about the consequences of ...

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 ...

It may sound too bizarre to be true, but the Amazon molly (Poecilia formosa), a fish that inhabits rivers, lakes, and swamps ...

There is a limit on how many times a mammal can be cloned before suffering "mutational meltdown", Japanese scientists have ...

Scientists believe there are only a few hundred black-footed ferrets still living in the Western United States. The carnivores once thrived on the plains between Canada and Mexico, eating prairie dogs ...