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Johnson & Johnson CEO William Weldon (left) and Colleen Goggins, chairman of the company's consumer unit, (right) testify at a House Oversight and Government Reform Committee hearing Thursday. Mark Wilson/Getty Images hide caption

itoggle caption Mark Wilson/Getty Images

California Gov. Arnold Schwarzenegger OKed a bill that requires school districts to offer students free water. Paul Sakuma/AP hide caption

itoggle caption Paul Sakuma/AP

Geochemist Gabriel Filippelli in an Indianapolis garden. Filippelli's research shows that many urban gardens may have soil contaminated with lead Courtesy of Gabriel Filippelli hide caption

itoggle caption Courtesy of Gabriel Filippelli