Some common contraceptives can kill embryos, not just keep them from forming.This is not an article about the morality of contraception. This is an article about a very specific scientific question: What happens to embryos formed while the mother is using modern methods of contraception? This information is of importance to some women choosing contraception. And, unlike 20 years ago, today’s science has much to say about the conditions that embryos face when they are formed in women using contraception. All methods of contraception can fail to prevent a recognized pregnancy. Statistics on how often a method permits a recognized...