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Scientists Create Synthetic Human Embryos

In a process that totally avoids sexual reproduction or even the need for an egg and sperm, human embryos have been created in a lab. The synthetic entities start with human stem cells, an initiative that isn’t regulated because the resulting embryos are synthetic. This technically allows scientists to pursue embryonic research that’s banned when human embryos are involved. That research is still self-limited, however, because synthetic embryos do not have digestive tracts,...