The Chinese scientist who claims to have created the world's first genetically-edited babies said another woman who was part of his study is potentially pregnant. At a summit in Hong Kong Wednesday, He Jiankui said his study is on hold after worldwide condemnation. Among the concerns are his lack of transparency and questions of whether his patients properly consented. But He doubled down and defended his work. Dr. Tara Narula reports on the research many experts call unethical.
