Jared Diamond’s journey of discovery began on the island of Papua New Guinea. There, in 1974, a local named Yali asked Diamond a deceptively simple question: “Why is it that you white people developed so much cargo, but we black people had little cargo of our own?”

Part 2: http://video.google.com/videoplay?docid=6846344734969027300&hl=en#

Part 3: http://video.google.com/videoplay?docid=-4008293090480628280&hl=en#docid=-3449100874735282191