What if You Could Grow a Baby in a Bottle?

This past week, physicians at Children's Hospital in Philadelphia announced that they'd had remarkable success with keeping lamb fetuses alive outside a womb--in a plastic bag filled with warm amniotic fluid, with the fetus' heart circulating blood through a filter to keep it oxygenated. Astonishing pictures of wee unborn laminated lambs quickly spun up the media science-fiction reference engine. Someday, that might be a human baby floating in a next-gen artificial uterus. Talking heads name-checked Gattaca and Brave New World. You could get a whiff of Blade Runner in there.