“Morning After Pill”

Is there any new material addressing the scientific and ethical questions of the “morning after pill” and the whole abortifacient issue?

Randy Alcorn has a revised ProLife Answers to ProChoice Arguments as well as his book Why ProLife? published in 2004. He has taken great care to cite all original sources for his readers so that they may use the books not only for reading, but as reference tools. Randy is, as far as I know, the most synthesized writer on the topic. By that I mean that he has done an extraordinary analysis of the available evidence and has put it into a format that is accessible and comprehensible to the average reader.