| web | https://www.washingtonpost.com/news/energy-environment/wp/2015/12/21/researchers-just-discovered-a-hidden-factor-that-could-be-driving-violent-crimes/?tid=sm_tw&utm_term=.55f992d7f150 |
| author | Chris Mooney |
| publication | Washington Post |
| date | 2015-12-21 |
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