Feeling stressed or sad? Before you succumb to the blues, try standing under a blue light. Several cities around the world claim to have reduced suicides, crime, and even traffic accidents by installing blue lights in the public spaces.
In Glasgow, Scotland, blue streetlights installed in 2000 have reduced street crimes noticeably. In Japan, a country notorious for its high suicide rates—authorities say in 2007 alone there were 640 suicides attempted by jumping in front of oncoming trains—two railroad companies have turned to light therapy. After blue lights were installed on station platforms and near railway crossings, the number of suicide attempts dropped to zero. Also in Japan, hundreds of blue lights have been installed along highways and rest stops. An expressway operator said trash cans near blue lights received 20 percent less garbage.