Under the Citypulse project in Paris, volunteer citizens were given the “Green Watch”, a special watch that contained two environmental sensors to detect ozone and noise levels. As these people went about doing their daily chores, the Green Watch recorded the noise and ozone in their surroundings and transferred this data via a mobile phone to an online platform to be used in various ways such as maps and models. The eventual aim of the project is to increasingly involve citizens in environmental measurements by disbursing several such environmental sensors and help build a sustainable city.

The Green Watch

[via KK]