New York Times: The federal government will take steps to cut its energy use and reduce its heat-trapping emissions by 28 percent by 2020, compared with 2008 levels, the White House announced on Friday. The government is the largest user of electricity and fuel in the country, accounting for roughly 1.5 percent of the nation`s annual energy consumption and emissions of the gases that contribute to global warming. The White House said the emissions reduction goal, if met, would save $8 billion to $11 …