Secrecy Raises Concerns about Brazil's Nuclear Aspirations Brazil is fighting the United Nations in hopes of preventing inspections of a new atomic fuel factory. The plant enriches uranium, something Brazil hopes to export to foreign nuclear power plants someday. But in theory, it could also make raw materials for nuclear bombs. International experts are suspicious, but Brazilian disarmament campaigners say there may be a different explanation for their secrecy. Hear NPR's Martin Kaste.