It might be desirable to live in the leafy suburbs, but for urban dwellers, green spaces may be few and far between. Microalgae liquid trees might provide an alternative.

Large delivery vehicles in the congested streets of Bogotá are contributing to thousands of deaths a year. Electric bikes are now being trialled as their replacements.

Calibrated low-cost sensors in Kinshasa and Brazzaville provide new information on pollution and help scientists model a way to improve access to air quality data.

NASA scientists will be teaming up with epidemiologists in the agency’s first health-focused mission. With satellite data, they’ll find out how air pollution affects health in cities around the world.

Artificial trees, such as the BioUrban 2.0, could be the future of clean air in sprawling, densely urbanised areas.

The growth of cities is a cause for air pollution concerns - but raising awareness about something invisible is a challenge. Hawa Dawa might just change that. 

Anyone can become a citizen scientist and do their bit to improve local air pollution with the help of the PocketLab Air.

A new innovation makes it possible to capture air pollution from car engines before it contaminates our cities and lungs - and turn it into ink.

The creative mind behind the smog-eating tower and the smog-jewellery is collaborating with China's largest bike-sharing scheme provider to come up with a fleet of smog-eating bikes for the city of Beijing. But will they just be biting off more than they can chew?