Many patients with organ failure, tethered to a dialysis machine four hours every other day, see in these small pigs hope for ...

But they don’t get to go outside and play in the dirt like other pigs. They are clones and constitutionally weak, genetically engineered to have kidneys, hearts and livers more compatible with ...

Some scientists are confident that organs from genetically modified pigs will one day be routinely transplanted into humans. But substantial ethical questions remain. Genetically modified ...