US vice president-elect Joe Biden speaks at president-elect Barack Obama’s press conference on energy and the environment in Chicago on December 15, 2008 with Barack Obama (L) and Lisa Jackson (R). Obama nominated Nobel Prize-winning physicist Steven Chu as his energy secretary, Lisa Jackson as head of the Environmental Protection Agency, Carol Browner as the White House “climate czar” overseeing the battle against global warming, and Nancy Sutley as chairwoman of the White House Council on Environmental Quality during the press conference. AFP PHOTO/Nicholas KAMM
