Dow Jones: The U.S. Environmental Protection Agency proposed a national system for reporting carbon dioxide and other greenhouse gas emissions by major emitters Tuesday. The registry, which was originally proposed in a 2007 energy bill and is funded in U.S. President Barack Obama’s 2010 Budget outline, would lay the foundation for regulation of CO2 and other gases thought to contribute to global warming. “Our efforts to confront climate change must be guided by the best possible …