IVF

At least one U.S. hospital is attempting uterine transplants for women born without a uterus, or who've lost it to disease. The surgery has yielded births in other nations, but poses real risks, too.

U.S. military health care covers the high cost of in vitro fertilization, but the Veterans Affairs health system doesn't. The discrepancy is putting vets with combat injuries in a bind.

A lab in Seoul is the only place in the world known to commercially clone dogs. But often the dog clones are sickly, critics say, and many other dogs are subjected to surgery to make a clone.

Former spouses who disagree over whether their embryos can be destroyed have taken their case to court. In the process, one thing has become clear: how far the law lags behind reproductive technology.