Author and cancer survivor Sandra Steingraber’s recently published book Living Downstream: An Ecologist Looks at Cancer and the Environment, is a journal of her personal search for the causes of cancer. The book places the blame for most cancers on the widespread use of certain synthetic chemicals, including pesticides and petroleum products and it’s drawn her into a controversy with the prestigious New England Journal of Medicine which published a negative review, by a reviewer with a now admitted conflict of interest. She has also drawn praise from cancer activists for her focus on the human rights aspect of the disease. Steve Curwood speaks with Ms. Steingraber.