NOVA: The Violence Paradox
Is violence actually declining? If so, why? And can we build a more peaceful future?Despite the constant news of violence, from mass shootings to wars, psychologist Steven Pinker believes we may be living in one of the most peaceful periods in human existence. Could it be true that physical violence has been in decline for centuries? And can it be prevented-or is it simply part of human nature? NOVA takes you on a journey through history and the human mind to explore what triggers violence and how it may have decreased over time.

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