There’s nothing to rule out the possibility that the economically successful of the modern world are actually genetically different from the people who are not successful, economic historian Gregory Clark tells Paul Solman in part four of their never-before published…

May 23

Former Harvard president Larry Summers admires the research of "rock star" French economist Thomas Piketty, but he's been skeptical that innovation and entrepreneurship don't have more to do with the high rate of return on capital. Innovation is great, Piketty…