It's back to school for the pupils of this small primary school in northeastern France and children are learning how to keep an eye on air quality. The school installed CO2 indicators in six classrooms in 2015, and now when the lights turn red, teachers and pupils air out the classrooms.

Subscribe to AFP and activate your notifications to get the latest news 🔔
http://www.youtube.com/channel/UC86dbj-lbDks_hZ5gRKL49Q/?sub_confirmation=1