Whether this stills the abortion debate one bit or not, I don't know.
But, it's very interesting scientifically. The "morning after pill" apparently doesn't prevent implantation of a fertilized egg. And, it hasn't even been tested to that end.
Setting aside any pro-life rejoicing or pro-life furies, women who worry may need to try, I guess, morning-after RU-486? Maybe a "morning-after" low-dose version of it could be approved?
Then, there will be the battle for insurance funding of it.