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Humans may be the only species to shed tears. Does that make crying a strictly human act? This program explores the deep well of animal instinct that, shaped by eons of evolution, still informs our expression of grief, fear, anger, and even joy. F...
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Contents
Evolution of the Cry (1:39) -- Separation Response (4:23) -- Colic Crying (3:42) -- Three Types of Tears (3:40) -- Triggers of Emotional Tears (4:07) -- Chemical Differences of Different Types of Tears (3:56) -- Crying Differences Between Men and ...
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