Oil industry in Canada bolsters efforts for cleaner production

  • by: CLIFFORD KRAUSS , New York Times
  • Updated: June 26, 2013 - 8:39 PM

CHRISTINA LAKE, ALBERTA – After two years of study, President Obama this week defined the criteria for what will be one of the signature decisions of his presidency: the proposed Keystone XL pipeline that would carry heavy crude from here to American refineries must not “significantly” worsen global warming.

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