By Human Life International - In 1963, the United States Department of Health, Education and Welfare (HEW) shared the widely held definition of abortion as being “all the measures which impair the viability of the zygote at any time between the instant of fertilization and the completion of labor.”[2] Indeed, until the mid‑1960s, scientists universally acknowledged that human life begins at the moment of fertilization of the ovum by the spermatozoa, somewhere in the Fallopian tube.