After garnering data on the harmful effects of dust from sewage sludge used as fertilizer on US and Canadian farms, David Lewis, former microbiologist with the Environmental Protection Agency (EPA), spoke out in Nature articles.[1,2] The ensuing confrontation with his superiors would get him terminated from the EPA. "I never thought of myself as a whistleblower," he says. To Lewis, whistleblowers pointed fingers at people who fraudulently spent government money to buy things like private boats.