For the past five years, the prospect of human cloning has been the subject of much public attention and sharp moral debate. Several mammalian species have been cloned; the first cloned human embryos ...

Clone is a word that is now commonly used in many contexts in the United States. For example, rather than purchasing a name-brand computer, we might purchase its clone, which provides close to the ...

Meet Zhong Zhong and Hua Hua, two cloned macaque monkeys. Chinese scientists first unveiled these monkeys several weeks ago, marking the first time primates have been successfully cloned with the same ...