Commentary In January, a group of scientists started working on clinical trials to cure sickle cell anemia, an inherited disease which causes red blood cells to form in a sickle shape and prevents them from properly carrying oxygen through the body. The scientists will be using CRISPR-Cas9 technology, which is a cutting-edge method of editing DNA so that, in this case, the body begins properly creating red blood cells. If the trials are successful, this will be a great relief to millions and millions of people suffering from this disease. It will also open the door for more uses of CRISPR, which could be a tremendous benefit to humanity—but also a grave threat. While the technique could lead to eradicating a host of serious illnesses, it could also lead to scientists playing God and designing future of humans—or accidentally creating damaging inheritable genetic maladies. Already, a scientist in China is …