Polygenic embryo screening is a new IVF technology that lets parents assess embryos for genetic risk, from heart disease to, controversially, intelligence and height. While marketed as a path to healthier babies, the science is probabilistic, inaccurate for non-European populations, and unable to cleanly separate health screening from trait selection. Bioethicists warn it could turn reproduction into an optimization exercise, widen inequality, and reshape social norms until opting out feels like negligence. Read more here.