 For some of you out there, a few of you at least, summer doesn't necessarily mean the beach or the lake or the ballpark. It means the racetrack. We'll close the show today with a visit to the track guided by the poet Ada Limon. Some years ago, Limon moved from New York City to Lexington, Kentucky, where there are fewer rats and more horses. In a book called Bright Dead Things, she writes about adjusting to her new home and the constant talk of thoroughbreds.