According to a recent ranking, there’s no better place on Earth to live than Denmark. The Social Progress Imperative, a study which was conducted with the help of Michael E. Porter of Harvard Business School and Scott Stern of MIT, measures things like access to the Internet, affordable housing, health care and freedom of expression. Its findings suggest money isn’t the only key to happiness. The U.S., which boasts a higher gross domestic product per capita than Denmark, ranks 18th in the study. But the Danish finance minister, Kristian Jensen, says his country faces a number of challenges in persuading highly ... (full story)