I just wanted to follow up my post yesterday with this link to scientific evidence about the beginning of life.
This LifeNews.com article lists nine academic sources showing scientific proof that a new human life begins at the moment of fertilization.
Here is just one for you: “The fusion of sperm and egg membranes initiates the life of a sexually reproducing organism.” — Marsden et al., Model systems for membrane fusion, CHEM. SOC. REV. 40(3):1572 (Mar. 2011)
Despite what the deniers may say, scientific evidence is on our side. Keep this article handy, so the next time someone denies the truth about when life begins you can point them to these sources.