Inexpensive cloth face masks, worn by many people in heavily polluted countries, offer only partial protection. Instead governments should warn people to avoid exposure and work to clear the air.
Tiny particles of a mineral known as magnetite may be causing havoc with our health.
Data from London's Great Smog of 1952 show that air pollution exposure in early life leads to striking increases in asthma rates. Millions in the developing world face similar risks today.
Africa has largely been ignored when it comes to official global air quality programmes. Yet low-income countries like many of those in Africa are particularly affected by air pollution.
When it comes to reducing air pollution, scoring and ranking cities is neither accurate, nor productive.
From recycling to air pollution, eco-friendly European laws have a big impact.
U.S. states need to put in place new ozone air quality standards, but how they are measured – based on peak ozone – doesn't always best reflect a city's overall air quality.
Sadly the finding that children, especially poorer children, suffer the most from air pollution isn't particularly surprising.
Mexico City is suffering through an air quality crisis this spring, but institutional corruption is making the proposed solution – restricting car usage – ineffective.
The main mayoral candidates agree air quality is a huge issue, but disagree on policies.
It's a transition the rest of the world is watching: How can we know whether coal use in China – the world's largest emitter – is going up or down?
This low-cost way of monitoring air quality is appealing, but there needs to be acknowledgement of their weaknesses as well as strengths.
So-called 'healthy towns' will address child obesity and dementia, but the real killer remains at large.
Poor indoor air quality is responsible for thousands of deaths – here's how to keep yourself healthy.
Parents in three Australian states are being given misleading advice about the dangers of lead to babies and small children – including failing to warn pregnant women about miscarriage risks.
Air quality in the Indian capital is so bad that the government has instigated a vehicle ban.
From New Year's Eve, to Guy Fawkes night, to Diwali, fireworks are an exciting way to celebrate. But these dazzling displays come at a serious cost to the environment.
The Paris climate summit yielded a pact to reduce air pollutants that contribute to global warming but missed a chance to address the interlinked effects of agriculture and climate.
Conflicting evidence means it's tough to tell whether trees helping to clear the air, or if green is not as good as we thought.
Leaders in Jakarta want to tackle the haze crisis but they don't have much authority over corrupt local elites.