President-elect Barack Obama has unveiled his nominees for top climate change and energy positions in his administration. Nobel-winning physicist Steven Chu has been tapped to serve as Energy Secretary. Lisa Jackson, chief of staff to New Jersey Governor Jon Corzine, will head the Environmental Protection Agency. Former EPA head Carol Browner will run a newly created White House council to oversee environmental issues. And Los Angeles Deputy Mayor Nancy Sutley will head the White House Council on Environmental Quality. At a news conference in Chicago Monday, Obama highlighted his plans to encourage innovation to address the US dependency on foreign oil. [includes rush transcript]