Researchers used economic principles to predict which countries would win the most medals at the London Olympic Games. The study was 95 percent accurate for the 2008 games. And this time around, it was 97.7 percent accurate.
For more on this big weekend in politics, we turn to Cokie Roberts for some analysis. Good morning.
COKIE ROBERTS, BYLINE: Hi, Renee.
MONTAGNE: So we just heard in Ari's piece the excitement Paul Ryan is generating among the Republican faithful. Is that partly why Mitt Romney chose him as his running mate, to generate some of the kind of enthusiasm that has been missing from his own campaign?
Over the weekend, GOP presidential hopeful Mitt Romney named Wisconsin Rep. Paul Ryan as his running mate. David Greene talks to Ryan Lizza, a reporter for The New Yorker, who recently profiled Ryan for the magazine.