Rabbi Moses Tendler

"Many of the population-control techniques being proposed for mass use are categorically unacceptable to Judaism.  Surgical intervention, in the form of vasectomies (male), oophorectomies, and tubal ligations (female), or abortions, is forbidden to both Jew and non-Jew unless necessitated by life-threatening medical emergencies.   Abortion is included in the Noachidic prohibition of murder."