Based on the acclaimed book by ecologist and cancer survivor Sandra Steingraber, Ph.D., Living Downstream is an eloquent and cinematic feature-length documentary following Sandra during one pivotal year as she works to break the silence about cancer and its environmental links. Steingraber is a bladder cancer survivor. Her aunt died from the same cancer. Her mother and other ...$professor讲完之后说 some of you will get cancer and that's a fact and maybe we can't do anything about it or maybe we can.