Leicester has become the first city in the world to have its air quality mapped out using an airborne pollution-scanner.
This bird's eye image shows how pollution levels vary across the city.
Images were taken by researchers from the University of Leicester from a survey plane flying 900m above the city's roads, parks, industrial estates and houses.
The European Commission is calling on the government to find a solution to improve air quality.
More top news
Staffordshire County Council have said news of improvements at the Alton Towers resort for the 2016 season would boost the county’s tourism.
University Degree: Birmingham City University student Ryan Sharman reveals his top five tips for university survival
Aston Villa manager has said midfielder Jack Grealish will be excluded from the Watford game for a breach of discipline.