A solid majority of Americans say the United States should join an international treaty to limit the impact of global warming, but on this and other climate-related questions, opinion divides sharply along partisan lines, according to the latest New York Times/CBS News poll. Two-thirds of Americans support the United States joining a binding international agreement to curb growth of greenhouse gas emissions, but a slim majority of Republicans remain opposed, the poll found. Sixty-three percent of Americans -- including a bare majority of Republicans -- said they would support domestic policy limiting carbon emissions from power plants. Public support for...