Edinburgh University's Ian Wilmut, who cloned Dolly the sheep, is giving up his old cloning methods for a new one developed by Shinya Yamanaka at Kyoto University, reports the BBC. Yamanaka's method genetically modifies adult cells, such as skin cells, to make them more like stem cells.

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A new Nature Biotechnology paper reports that CRISPR-Cas9 gene editing can lead to large deletions or complex rearrangements that could be pathogenic.

The UK's Nuffield Council on Bioethics says genetically modifying human embryos could be morally permissible, according to the Guardian.

The Wall Street Journal likens a prototype developed by Synthetic Genomics to a "biological fax machine."

In PNAS this week: strategy for reactivating Rett syndrome-linked MECP2, small molecules able to suppress Staphylococcus aureus virulence, and more.