A cackle and a giggle can mean different things. Scientists say there are two types of laughter: the kind that comes from pure glee, and the kind that's meant to send a social message. New research suggests autistic children don't often express th
For a group of paleontologists, a tour of the Creation Museum seemed like a great tongue-in-cheek way to cap off a serious conference. But while there were a few laughs and some clowning for the camera, most left more offended than amused by the fri
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