The 40-hour work week is an outdated model, according to Science Nordic's James W Vaupel, head of the new Danish Max Planck research center. Instead, he argues, we should only work 25 hours a week--but keep working until we’re octogenarians. “We’re getting older and older here in Denmark. Kids who are ten years old today should be able to work until the age of 80. In return, they won’t need to work more than 25 hours per week when they become adults,” Vaupel told Science Nordic. “In the 20th century we had a redistribution of wealth. I believe that in...