By Catholic News Agency - The number of “abandoned” human embryos in the United States could number in the millions, and many fertility specialists are reticent to discuss the dilemma of what to do with frozen embryos… According to Christine Allen, a fertility doctor who runs a consultant business called Elite IVF, most fertility clinics fertilize far more eggs than they plan to use when performing in vitro fertilization, leading to the practice of indefinitely freezing surplus embryos— far more even than the process of IVF, which has a high failure rate, attempts to implant into a woman’s uterus.