Yesterday, the White House announced  that it will nominate epidemiologist David Michaels to direct the Occupational Safety and Health Administration, the Department of Labor agency that sets worker safety standards. Michaels is a familiar face to observers of environmental health policy. As an official at the Department of Energy in the late 1990s, he uncovered documentation of health risks to nuclear weapons workers and crafted a compensation program. After moving to George Washington University in Washington, D.C., he joined other scientists in protesting  the manipulation of science in the Bush Administration. Kudos for his nomination  are piling up, but Michaels is not without critics .