I have always wanted to see a woolly mammoth. From the time I first read about them up until, well, a few moments ago, I’ve fantasized about going back in time to see a herd shoving its way through an Ice Age snowstorm. Alas, it cannot be, even if George Church and a new company, Colossus, bend heaven and earth to make it happen.

The bioethics and legal communities must come together to find ways to move with the same ease of the scientific research community--to transcend the geopolitical borders and jurisdictional concerns that make international regulation so difficult.

Professionals and the public in China first learned of the jail sentence of He Jiankui from the report of Xinhua News Agency. No information, including any interpretation, was provided by the Court. But the reported words of the sentence are so ambiguous as to leave room for different interpretations. We believe that the public has the right to know more than Xinhua News Agency reported.

Last month, an international commission convened to consider whether and how germline editing – changing the genes passed on to children and future generations -- should proceed. The discussions focused mainly on the safety risks of the technology, which, while important, are not the only issues to consider. Any conversation regarding germline editing must also honestly and thoroughly assess the potential benefits of the technology, which, for several reasons, are more limited than generally acknowledged.

The global scientific community has been unanimous in condemning Chinese scientist He Jiankui, who announced last week that he used the gene-editing technology called CRISPR to make permanent, heritable changes to the genes of two baby girls who were born this month in China. Criticism has focused on...