" America ranks number 41 in child mortality, according to the Social Progress Index, which is based on research by three Nobel Prize–winning economists and covers 146 countries for which there is reliable data. We rank number 46 in internet access, number 44 in access to clean drinking water, number 57 in personal safety and number 30 in high-school enrollment. "

― Nicholas D. Kristof , Tightrope: Americans Reaching for Hope