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The article announces the standards for all research papers on cloning by "Nature." The periodical is asking the authors to provide nuclear and mitochondrial DNA fingerprints for all cloning papers submitted for publication. Nuclear DNA fingerprints of the lines should be presented for comparison with existing lines, in the case of papers disclosing new embryonic stem cell lines.

A letter to the editor in response to the article "Standards for Papers on Cloning" published in the 2006 issue of "Nature" is presented.

Provides background and analysis of a paper which reports a procedure to obtain viable lambs from cell lines that have been established from more mature embryos. The use of a cell line from the udder of a six-year old ewe; History of attempts to clone mammals; The implications for genome development; The paper in the February 27, 1997 `Nature.'

The article cites an inquiry from the blog of the Web site, Nature Reports Stem Cells. It is asked how the journal "Nature" could improve its peer-review process for papers about cloning. This question is aimed at preventing the publication of fallacious data. One question points to the adequacy of the review procedure for the refereeing of cloning papers.

The article reports that Gerald Schatten which was recently exposed for faking the results of cloning experiments was cleared of misconduct by University of Pittsburgh in Philadelphia, Pennsylvania. An investigation was conducted by the university after claims in a paper that he had co-authored the cloning research which turned out to be false.

The article focuses on the issues concerning the animal cloning experiments of South Korean scientist Woo Suk Hwang. Other scientists claimed that the research lacks evidence. Hwang however admitted that there were errors in the 2005 stem-cell paper, but denied fraud. He claimed that 11 patient-specific stem-cell lines were created as reported but six were never frozen as opposed to the claims of other scientists. Furthermore, the science community have expressed their concerns over the implication of the controversy to cell research.

The article reports on Korean researcher Woo Suk Hwang's application for a new license to work on human embryonic stem cells to replace his revoked one. Hwang's license was revoked after it was found out that his 2006 work on human embryonic stem cells was fabricated. He is still on trial after being charged with fraud, embezzlement and violation of Korean bioethics law. His application is expected to be decided by the Korean science ministry on April 2008. Aside from his license application, Hwang's name also appeared on at least three papers, that discuss improvements in pig cloning from new methods of cultivating porcine eggs, which he worked on after he was fired at the Seoul National University in South Korea.

The article reports world news briefs in science. An official inquiry found that the Mars Global Surveyor spacecraft was lost due to a series of errors originating with a programming flaw. A research paper from Seoul National University in Korea that reported the first cloned wolf has been questioned as possibly fraudulent.

A letter to the editor is presented in response to the article "Standards for papers on cloning" in the 2006 issue.

A letter to the editor is presented in response to the article "Standard for Papers on Cloning," in the 2006 issue.

A letter to the editor in response to the article "Standards for Papers on Cloning" published in the 2006 issue is presented.

Opinion. Examines the implications of Richard Seed's intention to clone humans in Chicago, Illinois. Seed's naivety and hubris; Possible benefits of Seed's behavior; Seed's excesses polarizing the debate; Distinctions in cloning debate; Declarations at national and international levels; Scientific possibilities and social pitfalls of cloning; Upcoming paper from Britain's Human Genetics Advisory Commission.