In parts of China, you can’t just see the smog, you can smell it and taste it. 

China's step back on pollution promises means smog is 10 times worse than London

A study also found if could stunt children’s lung development.

Living near busy road 'can increase lung cancer risk by up to 10%'

In a major urban study, levels rose from around 20 micrograms/m3 during the day to 80 micrograms/m3 just before 11pm.

It was hoped the idea of walking in public with such an embarrassing bag would encourage people to use their own.

Swindon Council are exploring other recycling options as costs rise. 

Air pollution causes an estimated 40,000 premature deaths a year in the UK.

A new satellite has given us the best ever picture of our toxic air, as seen from space. 

A chain of nurseries has said it will impose a bar on glitter because it is a damaging microplastic that cannot be recycled.

Pollution claimed nine million lives in 2015, with air pollution from vehicles and factories accounting for 6.5m deaths, researchers found.

The European Commission has sent a "final warning" to the UK for failing to address repeated breaches of legal air pollution limits.

Authorities will temporarily clamp down on open-air barbecues, garbage incineration and wood burning to tackle China's chronic pollution.

The backing of the world's two largest emitters of pollution could see the Paris deal brought into force before the end of the year.

Any car registered before 1997 will be affected by the ban - and the UK is about to follow suit with the introduction of Clean Air Zones. 

After today's landmark Supreme Court ruling - which forces the government to take more action on air pollution - we look at the facts.

Health experts urged people with breathing or heart problems to monitor their symptoms and avoid outdoor activities due to air pollution.