Obama to plead US case at global warming summit

President Barack Obama will commit the United States to substantial cuts in greenhouse gas pollution over the next decade _ despite resistance in Congress over higher costs _ when he travels to a major climate conference in Copenhagen next month.

Obama will attend the start of the conference Dec. 9 before heading to Oslo to accept the Nobel Peace Prize. He will "put on the table" a U.S. commitment to cut emissions by 17 percent over the next decade, on the way to reducing heat-trapping pollution by 80 percent by mid-century, the White House said.

Cutting U.S. carbon dioxide emissions by one-sixth in just a decade would increase the cost of energy as electric utilities pay for capturing carbon dioxide at coal-burning power plants or switch to more expensive alternatives. The price of gasoline probably would increase, and more fuel-efficient automobiles _ or hybrids that run on gasoline and electricity _ probably would be more expensive.