Reuters: President-elect Barack Obama will act against climate change early in his presidency, an environment adviser said on Wednesday amid doubts that a U.S. carbon-capping program will be in place before 2010. “The president-elect will move quickly on climate change,” Jason Grumet, the Obama campaign’s lead energy and environment adviser, told a conference on carbon trading. Grumet, who has been mentioned as a possible choice for the new U.S. administration’s energy secretary, told …