If you want to be immortal (in real life or in television and film), you need more than anti-aging cells – you need cells that fight common diseases. It is a fact echoed in In Time, a film where the characters never age past 25 years old. One of the characters mentions that only an accident could take his life – cancer, heart disease, and other illnesses do not exist in In Time’s (very youthful) world. But how could people be engineered not to age and resist cancer? Maybe the characters in the film are benefitting from some recent news at UCLA, where researchers engineered stem cells that find and attack melanoma.