William R Hoffman

Today's scientists are showing us how stem cells create and repair the human body. Unlocking these secrets has become the new Holy Grail of biomedical research. But behind that research lies a sharp divide, one that has continued for years, as using human embryonic stem cells is strongly opposed by many people. While stem cells offer the hope of creating or repairing tissues lost to age, disease, and injury, they also hold the potential to incite...