How can one baby have five parents? This NOVA series explains that and much more about the rapidly expanding science of assisted reproduction. In just 23 short years since the first in vitro fertilization (IVF), or "test tube" baby was born, the science of IVF has led to the birth of babies to women over 60 and to male couples through surrogates. NOVA discusses what is on the horizon as well -- cloning and genetic engineering -- and offers a layperson's understanding of some of the latest techniques, which have names such as Intra-Cytoplasmic Sperm Injection and Preimplantation Genetic Diagnosis.
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