By John Solomon
How the government's punishing of the exposure of official wrongdoing can linger for years
He calls it innovative. Others call it a big risk. In any case, the stem cell procedure that Texas Gov. Rick Perry had last month was an unusual experiment to fix a common malady: a bad back.
Scientists are making progress in testing stem cells to treat a variety of diseases, but they're warning about clinics that push unproven treatments.
