Van Jones talks about his time as the green jobs advisor to the Obama White House and explains why he resigned after just six months. Then, former "SNL" castmember Rachel Dratch discusses her rollercoaster career and finding happiness when she least expected it. Today’s installment of A History of the World in 100 Objects takes a look at a set of chess pieces that were found on a Scottish beach. Just in time for Passover, Jonathan Safran Foer and Nathan Englander talk about their new version of the Haggadah. Ben Zimmer on the unexpected origins of the word jazz. And, director Steven Ives talks about his new film, “Grand Coulee Dam” a Depression-era public works project that transformed Washington State.