People who had to strike up conversations on a subway later reported feeling happier than those who didn’t. Christie Nicholson reports.

Sisters spend double the time caring for parents as their brothers. Dina Fine Maron reports

Survey subjects rated life experiences as making them happier and as a better use of money than buying objects. But they actually spent their cash on material goods, whose value is more easily quantifiable. Erika Beras reports

Patients in low-income zip codes were up to 10 times more likely to lose a leg or foot than diabetic patients in more affluent zip codes. Dina Fine Maron reports