New York Times: President Obama will sign an executive order on Thursday to cut the federal governments greenhouse gas emissions, a White House official said, his latest use of presidential power to address the root causes of climate change. Continue reading the main story Related Coverage Obama Is Planning New Rules on Oil and Gas Industrys Methane EmissionsJAN. 13, 2015 It is part of Mr. Obamas effort during his last two years in office to use an expansive interpretation of his presidential authority...