You’re not getting older, you’re getting happier. That’s the result of a recent study that shows life is rosier after age 50. Researchers say those in their mid-to-late 50s experience fewer worries and less stress than those whippersnappers in their 20s. During their survey, scientists headed by Arthur Stone, a psychologist at New York’s Stony Brook University, learned that stress and anger slowly decreased from young adulthood through old age. But worry remained at a constant level until it briefly increased in the 40s, then declined at age 50.