“In January, Ruthie’s dad Ethan asked her whether she wished that her parents had corrected the gene responsible for her blindness before she was born. Ruthie didn’t hesitate before answering — no. Would she ever consider editing the genes of her own future children to help them to see? Again, Ruthie didn’t blink — no.” Nature’s Erika Check Hayden asks a question that is sure to be fiercely debated in the coming years: Should you edit your children’s genes? (I’d be surprised if my kids even let me edit their newsletters.)