Former Treasury secretary and Harvard president Larry Summers has resigned from the OpenAI board, he and the company told Axios in separate statements Wednesday, amid new revelations about the depths of his ties to Jeffrey Epstein.The big picture: The Epstein fallout continues to balloon, now coming for Summers, once one of the nation's pre-eminent economists. What they're saying: "In line with my announcement to step away from my public commitments, I have also decided to resign from the board ...