BTW, I'm not Catholic, so I can't weigh in on the whole birth control issue, but it is obvious this researcher has an agenda. If you can't advance your own arguments based on logic, attempt to weaken the other side by manipulation of fact.
The only other comment I have is that I believe human life begins at fertilization when the egg and sperm cease to exist as seperate entities and chemically unite to become something uniquethat is neither- the human zygote. God & nature takes it from there, unless of course we intervene and terminate the human life.