President Obama showed last night that he was eager to spend his renewed political capital on priorities that he sometimes downplayed during his first four years in office -- notably climate change. Obama devoted more than two paragraphs of his State of the Union address to the issue, portraying climate change as a dangerous threat to be avoided through regulation if legislation proves to be impossible. "For the sake of our children and our future, we must do more to combat climate change," said the president, lowering his voice and slowing his pace for emphasis.