• Cnn's John King called in to talk about today's primary, Donald Trump, and Hillary Clinton. 
  • We opened the lines to hear if you would vote for a third party candidate? 
  • Harvard Business historian Nancy Koehn was in the studio to discuss how global warming is affecting office buildings.
  • WGBH's Arts editor Jared Bowen on the newest films and plays to see in Boston. 
  • Former Governor Michael Dukakis was in the studio to talk about the positive impact a north-south rail link could have.
  • Lucy Kalanithi was on hand to talk about the loss of her husband Paul Kalanithi and his book, "When Breath Becomes Air."