Reuters: The United States could cut climate-changing carbon emissions significantly over the next decade by getting American households to take actions that require no new laws or regulations and no loss of well-being, a report said on Monday. A research team led by Michigan State University estimated that 7.4 percent of current U.S. emissions — slightly more than the total emissions of France — could be eliminated in 10 years if U.S. households became energy-efficient by adopting available …