The first time Ashley McGuire had a baby, she and her husband had to wait 20 weeks to learn its sex. By her third, they found out at 10 weeks with a blood test. Technology has defined her pregnancies, she told me, from the apps that track weekly development to the ultrasounds that show the growing child. “My generation has grown up under an entirely different world of science and technology than the Roe generation,” she said. “We’re in a culture that is science-obsessed.”
Activists like McGuire believe it makes perfect sense to be pro-science and pro-life. While she opposes abortion on moral grounds, she believes studies of fetal development, improved medical techniques, and other advances anchor the movement’s arguments in scientific fact. “The pro-life message has been, for the last 40-something years, that the fetus … is a life, and it is a human life worthy of all the rights the rest of us have,” she said. “That’s been more of an abstract concept until the last decade or so.” But, she added, “when you’re seeing a baby sucking its thumb at 18 weeks, smiling, clapping,” it becomes “harder to square the idea that that 20-week-old, that unborn baby or fetus, is discardable.”
Scientific progress is remaking the debate around abortion. When the U.S. Supreme Court decided Roe v. Wade, the case that led the way to legal abortion, it pegged most fetuses’ chance of viable life outside the womb at 28 weeks; after that point, it ruled, states could reasonably restrict women’s access to the procedure. Now, with new medical techniques, doctors are debating whether that threshold should be closer to 22 weeks. Like McGuire, today’s prospective moms and dads can learn more about their baby earlier into a pregnancy than their parents or grandparents. And like McGuire, when they see their fetus on an ultrasound, they may see humanizing qualities like smiles or claps, even if most scientists see random muscle movements.