Francis Lawrence describes the rewards and challenges of bringing "The Hunger Games" books to the screen.
Researchers have successfully treated three leukemia patients using a new type of therapy. A year after the treatment, two of the patients remain cancer free.
The treatment involves extracting a patient’s blood, injecting a virus into his or her T cells, and then injecting the blood back into the patient, where the virus attacks the cancer cells. This therapy is not without side effects, but researchers say they’re getting closer to the “holy grail” of cancer treatment.