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Woodrow Wilson Center's Rejeski explores how nanotech may affect human health

As more companies use nanotechnology to improve their goods and services, researchers are taking a close look at potential health and environmental hazards that may accompany new innovation in the field. But many experts say safety research is trailing the fast pace of commercialization and want the U.S. EPA and other federal agencies to take a more prominent regulatory role. David Rejeski, director of the Project on Emerging Nanotechnologies at the Woodrow Wilson Center, explains the state of current research on nanotech, and how private companies and the federal government can shape public perception about this emerging industry.