Why do humans cry? A new reading of the old sob story

We all cry, but what biological function does it serve, asks Mark Honigsbaum. And why are humans the only species to shed tears of sorrow and joy?

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Can science explain the 'empathy deficit' ?

The US president claims the 'empathy deficit' is a more pressing problem than the federal deficit, but, says Mark Honigsbaum, empathy may be merely a product of changing scientific fashions

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