Air Laser to Combat Bombs, Pollutants, Greenhouse Gasses

Princeton University engineers have developed an air laser sensing technology that can potentially be used to detect bombs at a distance and measure airborne pollutants and greenhouse gasses.

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[source: http://www.buildings.com/article-details/articleid/11408/title/air-laser-to-combat-bombs-pollutants-greenhouse-gasses.aspx]