The Thames is an essential part of London, but its pollution has become a major issue. An art installation on a building on London’s South Bank reflects the river's water quality through data visualisation, hoping to raise awareness around the sewage problem.

Pollution masks may be commonplace in China, but now Westerners are increasingly looking to protect themselves against bad air quality, too. With 73% of Londoners worrying about air pollution, REN Flash Defence Mist is anti-pollution skincare that can ease their concerns when it comes to their skin.

Clean air is becoming scarcer as cities densify; over 80% of urbanites are exposed to air quality levels in excess of WHO limits. With city-dwellers worldwide seeking protection from particulates, face masks have become a common sight – and Airinum is adding a touch of style to this accessory.

An art installation in Philadelphia is making streets beautiful and cutting crime as a side effect. By brightening up a seedy back alley with neon lights, the project is cleaning up one corner of Philly, while helping to define the city’s future in a much broader way.