To edit or not
A controversial paper about modifying genes in fertilized human eggs raised some serious ethical concerns. Tina Hesman Saey covered researchers’ arguments for and against this type of genetic engineering in “Editing human germline cells debated” (SN: 5/30/15, p. 16).
Many readers embraced the idea of making permanent changes to human DNA. “If someone wants to genetically modify themselves or their offspring, why should somebody else’s antiquated morals stop them?” asked nkj123. “It’s only a matter of time before we learn to cure diseases, improve health and increase life span. These experiments will