Air quality sensors take a ride on city buses
— Rather than installing stations on fixed towers, why not use mobile sensors spread out over the whole city to get better air quality measurements? OpenSense, a project run by four laboratories at EPFL and one at ETH Zurich, is studying the possibility of installing sensors on the roofs of buses and trams, thus taking advantage of already existing public transport and mobile phone networks. Testing is currently underway in Lausanne.