- CRISPR-Cas9 gene-editing raises urgent ethical questions about designer babies, with global legal prohibitions against human germline editing.
- Recent studies using more precise base-editing on human embryos (legal if destroyed within 14 days) advance research, with scientists viewing regulated use for eradicating hereditary diseases as inevitable, hinging on safety concerns.
- Safety, rather than broader ethics, underpins most laws; influential bodies like the Nuffield Council and US National Academies don't deem germline editing inherently unethical, pushing debates toward fundamental questions about its use and regulation.
- Public opinion in the UK, Spain, and the Netherlands shows majority support for gene editing to correct life-threatening conditions and plurality support for manageable ones, reflecting increased trust in science and willingness to alter human biology.