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PBS NewsHour | Clip | If you're worried about the world, here’s reason to hope

The welfare of humankind has never been better, according to psychologist Steven Pinker, but whether it continues to get better depends on making collective wellbeing our goal and using science and reason to achieve it. Pinker, who pushes his case in his recent book "Enlightenment Now," joins economics correspondent Paul Solman for a conversation.

0:08:24 | AIRED: 2/22/2018 |
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