U.S. President-elect Barack Obama looks on as Lisa Jackson (L), chief of staff for New Jersey's governor, speaks after being introduced as the Environmental Protection Agency Administrator, during a news conference in Chicago December 15, 2008. Obama also named Nobel physics laureate Steven Chu as Energy Secretary, former Environmental Protection Agency chief Carol Browner to head a new council to coordinate White House energy, climate and environment policies, and Nancy Sutley, a deputy mayor of Los Angeles, as head of the White House Council on environmental quality. REUTERS/Stephen J. Carrera (UNITED STATES)