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UCL Professor attempts to shed light on the mystery of why humans cry Tears were used to communicate as well as their bio-mechanical function
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Other animals shed tears, but none appear to cry because of emotion
The uniquely human phenomenon of crying when we are overcome by emotion developed as a means to communicate our feelings before the emergence of language, an influential scientists claims.
Michael Trimble, a professor of neurology, suggests that there must have been a time in our evolution when tears took on a meaning beyond their simple bio-mechanical function – keeping the eyeballs moist.
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