Last Saturday, there was a large gathering in Washington called the "March for Science". I didn't attend, but I gather that the idea behind the march was a call for society in general and government in particular to rely more heavily on the input of scientists when making public policy in the areas of their expertise. It seemed also to have a lot of messages about accepting the reality of global warming and the adoption of policies that would address it
All of that is well and good, and I'm all in favor of it
But while we're marching for science, how about if we include a little bit of the science of embryology when we make public policies?
Embryology is the study of life at its earliest stages. Human embryology is quite an advanced science, and there is an abundance of amazing resources that have been produced by scientists that can educate us about its truths. A quick Google search will uncover amazing photographs and models of embryonic human life. If we want the quick version, the Wikipedia article is a good place to start
Here are some of the basic truths that have been revealed to us by the science of embryology: "A human begins life as a fertilized ovum" ( University of Utah medical school website); "The first week of human development begins with fertilization of the egg by sperm forming the first cell, the zygote" ( University of New South Wales, Australia, website); "Human development is a continuous process beginning with fertilization and continuing throughout pregnancy, birth, childhood, adolescence, adulthood, and into old age." ( the Endowment for Human Development website); "Fertilization is the event most commonly used to mark the zero point in descriptions of prenatal development of the embryo or fetus" (okay, this one is Wikipedia, there were too many medical websites to keep citing them all)
So how does all this science relate to the making of public policy? Consider these quotations:

"During the first trimester, the predominant abortion method is "vacuum aspiration," which involves insertion of a vacuum tube (cannula) into the uterus to evacuate the contents."

"D&E is similar to vacuum aspiration except that the cervix must be dilated more widely because surgical instruments are used to remove larger pieces of tissue… Because fetal tissue is friable and easily broken, the fetus may not be removed intact. The walls of the uterus are scraped with a curette to ensure that no tissue remains."

"Because the fetus is larger at this stage of gestation (particularly the head) [after 15 weeks], and because bones are more rigid, dismemberment or other destructive procedures are more likely to be required than at earlier gestational ages to remove fetal and placental tissue."

"There are variations in D&E operative strategy… However, the common points are that D&E involves (1) dilation of the cervix; (2) removal of at least some fetal tissue using nonvacuum instruments; and (3) (after the 15th week) the potential need for instrumental disarticulation or dismemberment of the fetus or the collapse of fetal parts to facilitate evacuation from the uterus."

"The American College of Obstetricians and Gynecologists describes the D&X procedure in a manner corresponding to a breech-conversion intact D&E, including the following steps: 1. deliberate dilatation of the cervix, usually over a sequence of days; 2. instrumental conversion of the fetus to a footling breech; 3. breech extraction of the body excepting the head; and 4. partial evacuation of the intracranial contents of a living fetus to effect vaginal delivery of a dead but otherwise intact fetus."

All of those blood-chilling quotations are from the majority opinion of the Supreme Court of the United States in the case of Stenberg v. Carhart, which struck down a state ban on partial birth abortions. That opinion was authored by Justice Steven Breyer and joined by four other Justices. All of those Justices were highly intelligent and educated people, all of whom attended Ivy League or similar prestigious colleges and law schools. Presumably, they were all reasonably well educated (for laypeople) in basic scientific principles. One would expect that at some point their education included the basic facts of human embryology. That opinion was written in 2000, so Wikipedia was certainly easily available for quick reference
Yet they still upheld the legal right to kill members of the human race in the most barbaric means imaginable — dismemberment while still alive. They obviously knew the science, but ignored it
So by all means let us march for science. More public policy decisions should be made based on the facts uncovered by scientific research. But we cannot fool ourselves. Science alone is not enough to make good laws and to promote social justice in our society. We need a proper sense of morality, which cannot be discovered by the scientific method. For that, we need to listen to the voice of God, either in the natural moral law written in our hearts or in his revealed Word
When we ignore the truths of the moral law, we make even worse mistakes than when we ignore the laws of science. Let's march about that.