A Dying Breed? As the birthrate in European countries drops well below the "replacement rate" — that is, an average of 2.1 children born to every woman — the declining population will first be felt in the playgrounds.Credit...Edward del Rosario IT WAS A SPECTACULAR LATE-MAY AFTERNOON IN SOUTHERN ITALY,but the streets of Laviano � a gloriously situated hamlet ranged across a few folds in the mounta