Paleontologist Ian Tattersall discusses why homo sapiens emerged as the dominant human group. The director of the new documentary “The Island President” and the deposed leader of the Maldives discuss his rise and dramatic fall. Today’s installment of the BBC’s A History of the World in 100 Objects looks at the Hedwig glass beaker. Ellen Ullman talks about her new novel By Blood. And the authors of The Self Made Myth talk about the role government has played in helping individuals and businesses succeed.