A cultural shift in happiness trends sees teens cheerier than ever while adults over 30 watch their happiness decline. The results may illuminate why the death rate is rising for middle-age Americans, even as it falls for other age groups
via LiveScience.com http://ift.tt/1HK1y4Z
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου