By Christine Hsu | Nov 29, 2012 04:53 PM EST
A new study finds that smiles do melt women's hearts, after researchers found that a man's grin had the power to make women more obedient.
By Nikki Tucker | Oct 17, 2012 01:46 PM EDT
New research suggests people tend to mimic smiles directed at them based on their feelings of status and power.
By Makini Brice | Sep 21, 2012 07:10 PM EDT
This summer, a 17-year-old young man in East Grand Forks, North Dakota went to McDonald's; hours later he stopped breathing.