This makes me pause and give thanks for them and their wonderful laughter, smiles, and joy.

CNN: What are you thankful for?

And the laughter and smiles stay with me all the way home.

BBC: A Beijing state of mind

She's full of laughter and smiles.

CNN: A beauty beyond skin deep

In this case, roughly 80 percent of participants were very expressive demonstrating spontaneous smiles, laughter and even smirks.

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Smiles and laughter emanated from the two frequently throughout the conference.

CNN: Shark-bite victim: 'Only one option, which was swim'

There were a lot of smiles and laughter as Rubber Duck made its splash but Hofman says he doesn't expect everyone to react with big grins.

CNN: Hong Kong's giant rubber duck

The software detects the slightest deviations of facial movement in the eyes, cheeks, and mouth, tracking whether a person smiles, grins, or breaks out in laughter.

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