When you beam at someone, a lot happens during that interaction without you knowing it.
It turns out that not just our grins, but all of our facial ex...
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The year's happiest moments make everything worth it.
As with any year, 2013 was far from perfect. While it's natural to reflect on the worst of th...
Have you noticed that when you smile at someone, especially if you catch them off-guard, that they smile back? OK, not everyone smiles back! Or do they?
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