SAN DIEGO, Dec. 4 (UPI) -- Happiness spreads more robustly -- like a virus -- than unhappiness and seems to have a greater effect than money, U.S. researchers suggest.

BOSTON, May 22 (UPI) -- People who quit smoking in tandem and those who still smoke form separate "cliques" that shift to the periphery of their social network, U.S. researchers said.

CAMBRIDGE, Mass., March 9 (UPI) -- Having overweight friends and family increases the chances you'll be overweight as well, a Harvard researcher said.

BOSTON, July 6 (UPI) -- A Massachusetts man claims a TV producer unfairly kept him off the Donald Trump reality show "The Apprentice."

CAMBRIDGE, Mass., March 1 (UPI) -- A Harvard University study suggests white Americans are far more likely than their black counterparts to die soon after the death of a spouse.

CAMBRIDGE, Mass., Feb. 15 (UPI) -- Research by Harvard and Pennsylvania Universities find that for older people, the hospitalization of a spouse can harm the well-being of a partner.