Scientists, who examine evidence and seek out patterns for a living, have spotted a disturbing trend in the Bush administration. In February, more than 60 prominent scientists, including Nobel Prize winners, accused the Bush administration of packing advisory panels with ideological appointments, censoring reports, and gagging experts. By summer, the number of worried researchers had grown to 5,000. They're alarmed by neutered Web sites, altered and ignored studies, advisory panels relieved of their best members, and career public servants fleeing federal agencies. Americans need to trust scientific information coming from its government. They need to know that after a terrorist...