How technology is helping clean up the environment – in the skies and under the seas

In China, fighting pollution is one of the ‘three tough battles’, together with poverty reduction and achieving financial stability. More than 45 major Chinese cities have said they plan to establish a waste sorting system by the end of the year and smaller cities will follow suite by 2025. — SCMP

Attached to a drone, the palm-size device has a more acute sense of smell than a dog and can reach heights out of reach of traditional air quality stations.

Called Sniffer4D, it can detect and analyse in real time up to nine different types of gases and particles in the atmosphere.