Stoplights are hot spots for airborne pollution
Intersections expose drivers to 29 times as many harmful particles as the open road
![car at an intersection](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/02/kb_5328965419_5890633704_o.jpg?fit=860%2C460&ssl=1)
RED LIGHT, GREEN LIGHT Drivers may spend only a tiny fraction of their time at stoplights, but that’s when they inhale a higher concentration of pollutants than when in motion.
Sara B./flickr (CC BY-NC 2.0)