After an extensive confirmation hearing, the Senate will vote on Elena Kagan's nomination to the U.S. Supreme Court this week. But what, exactly, did they talk about? A new study has looked at the questions asked to each potential justice since 1939. Mostly, they talk about inconsquential matters, but examining the questions asked over the last 70 years gives insight into the issues that have faced our country and the court. --GOOD This visualization shows the number of each type of case heard by the Supreme Court.