Topics on today's show include:

• 
  
• Shale pioneer Harold Hamm has invited Senator Elizabeth Warren to tour shale sites in her home state of Oklahoma;
  
• Schlumberger has committed to meeting the U.N. Paris Agreement’s emission-reduction targets;
  
• Norway’s financial regulator says ‘green’ investing has a dark side;
  
• And finally today, the U.S. Department of Energy has won the dubious distinction of coining the worst phrase of 2019.
  

Also for the last two weeks of December, we'll do a weekly recap episode on December 27th and January 3rd. Daily episodes will resume on Monday, January 6th.