There are people who believe that the Shroud of Turin wrapped His body, others who stand by a radiocarbon analysis pointing to an origin circa 1300.

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An analysis was now under way to try to understand its origin, he added.

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Because the sounds of the most closely related apes matched most closely in the analysis of the laughter, the researchers believe the work is proof of laughter's shared evolutionary origin, followed by adaptation to its form in the species we see today.

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