I'm up too late, absolutely in awe of the videos at this site.
The EHD, or Endowment for Human Development, takes a neutral position on bioethics issues (e.g. abortion, etc.). This should make it clear that the materials on the site are not driven by some sort of pro-life agenda and thus, to some people, dismissible--the governing principle here is science.
Consider that according to the information here the embryo by six to eight weeks following conception can move her hands and demonstrate right or left-handed preferences, will show a startle response and can hiccup, and that her ovaries are identifiable by seven weeks; her heart has been beating from 3 weeks, one day after fertilization and some primitive brain activity can be measured by six weeks, two days after fertilization. (I would defer to Dr. Gerard Nadal if any of this information is incorrect.)
When do most women have abortions? Over half of all abortions take place in the first trimester. Aside from so-called "medical abortions" such as those using RU-486, though, most surgical abortions aren't done until the sixth week of pregnancy--for the gruesome reason that performing a surgical abortion earlier might fail to remove all of the tiny embryo, and leaving anything behind increases the woman's risk for a repeat abortion or for infections.
So the vast majority of abortions in America are killing a little girl like the one whose ovaries are visible at seven weeks in the video you can see here, or a little boy the same age, fingers, toes, brain, heartbeat, and all. Our culture has decided that the price of "choice," which requires the brutal tearing apart and destruction of these living beings and the disposal of their tiny bodies as so much garbage, is a perfectly acceptable one to pay.