Blog Posts: Air Quality

International consensus on cross-border environmental issues has been hard to come by, but a 40-year-old air pollution treaty has enjoyed great if largely unsung success, leading to cleaner air, healthier forests and the prevention of hundreds of thousands of premature deaths.

New Delhi's growing industry and transport sectors contribute to year-round air pollution, but the city's air quality reaches crisis levels during the crop-burning season in October and November.

As Diwali ends and winter sets in, fireworks and crop burning push New Delhi's poor air quality to dangerous extremes. But to fix underlying, year-round air pollution, Delhi should look to cleaner transport.

Ground-level ozone pollution, which can cause deadly respiratory problems and contributes to global temperature rise, is a complicated problem that poses complex governance challenges. These three strategies can help.

Air pollution is bad for your health—most people know that. But did you know it's also responsible for lower crop yields, reduced solar energy generation and changes in rainfall?

More than 7 million people die prematurely every year due to air pollution. Curbing short-lived climate pollutants like methane and black carbon can help while also reining in global warming.

Short-lived climate pollutants like hydrofluorocarbons, black carbon and methane aren't as well-known as carbon dioxide. But they have a powerful impact on the climate and on human health, and more countries need to develop plans to cut their emissions.

Toxic air pollution. Plastic-filled oceans. Sucking carbon from the skies. These are just a few of the stories that will shape 2018's legacy.

Besides the cost to human health, the pollution's environmental impacts make China's fourth-largest city less attractive to corporate investment.