The PBS documentary ‘The Gene’ showcases genetics’ promise and pitfalls
The genetic code to all life on Earth, both simple and complex, comes down to four basic letters: A, C, T and G. Untangling the role that these letters play in life’s blueprint has allowed scientists to understand what makes everything from bacteria to people the way they are. But as researchers have learned more, they have also sought ways to tinker with this blueprint, bringing ethical dilemmas into the spotlight. The Gene, a two-part PBS documentary from executive producer Ken Burns airing April 7 and 14, explores the benefits and risks that come with deciphering life’s code. The film begins with one of those ethical challenges. The opening moments describe how biophysicist He Jiankui used the gene-editing tool CRISPR/Cas9 to alter the embryos of twin girls who were born in China in 2018 (SN: 12/17/18). Worldwide, critics condemned the move, claiming it was irresponsible to change the girls’ DNA, as experts don’t yet fully understand the consequences. “This moment heralded the arrival of...