Development of Synthetic Embryos Raises Serious Ethical Questions

Children, even some who are too young for school, know you can’t make a baby without sperm and an egg. But a team of researchers in Israel have called into question the basics of what we teach children about the birds and the bees, and created a mouse embryo using just stem cells. It lived for eight days, about half a mouse’s gestation period, inside a bioreactor in the lab.

In 2021 the research team used the same artificial womb to grow…