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To get a better picture of how traffic pollution is being spread through the UK, scientists will be deploying mobile sensors in London and three other cities. Three kinds of sensors will be utilized to measure carbon monoxide, sulfur dioxide, and other pollutants — all at the same time. The smallest of the sensors (with satellite positioning system functionality) will be carried by cyclists and pedestrians who connect them to their mobile phones. Resultant measurements are then transmitted into a real-time database. Overall, collecting data using such volunteers is less expensive but is it efficient? Where else can lay people contribute to technology?
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