Blue streetlights may prevent crime, suicideDecember 10, 2008 The Yomiuri Shimbun in Other Sciences / Other
Blue streetlights are believed to be useful in preventing suicides and street crime, a finding that is encouraging an increasing number of railway companies to install blue light-emitting apparatus at stations to prevent people from committing suicide by jumping in front of trains.
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"Blue streetlights may prevent crime, suicide" December 10, 2008 http://phys.org/news/2008-12-blue-streetlights-crime-suicide.html