AS GODS

A sober reflection on the promises and perils of genetic engineering.

A professor of zoology at the University of Manchester and the author of Life's Greatest Secret: The Race To Crack the Genetic Code, among other books, Cobb investigates three areas of molecular biology that raise enormous safety and ethical concerns: heritable human gene editing, gene drives, and viral gain-of-function research. In order to fairly assess the current state of these fields, he recounts the history of recombinant DNA research as well as the initial steps toward its commercial exploitation in medicine and agriculture. Readers without a solid understanding of biology will likely find that the scientific complexity of the history robs it of some of its drama. Cobb’s focus, however, is not on the science itself but on the social and political context of these discoveries. In particular, he examines the few moments in which scientists themselves sought to organize public debate about the potential consequences of their work. Most interestingly, Cobb contends that the famous 1975 Asilomar conference, while well intentioned, was limited by its focus on laboratory safety and lacked sufficient discussion of the broader ethical issues surrounding genetic manipulation. This view informs the main conclusion the author aims at the funders, scientists, and policymakers who are his primary audience. He believes the excitement surrounding “inevitable technical solutions,” such as CRISPR gene editing, often distracts from posing a more fundamental question, one that encompasses a wider variety of disciplines other than molecular biology: To which pressing problems are these techniques the safest and simplest solutions? While Cobb is careful to note that there are important potential applications in the three areas that concern him, he concludes that a great deal of research remains a risky solution in search of a problem.

A look at genetic engineering that provides valuable background for rethinking the appropriate uses for these technologies.