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02/05/2018 15:38 SAST

9 Out Of 10 Air-Pollution Deaths Occur In Developing Countries, WHO Study Finds

And almost everyone is breathing toxic air.

Students walk along a street as they are released from school to return home earlier due to the haze in Jambi, Indonesia's Jambi province, September 29, 2015 in this file picture taken by Antara Foto. Antara Foto/Wahdi Setiawan/via REUTERS/File Photo ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. FOR EDITORIAL USE ONLY. MANDATORY CREDIT. INDONESIA OUT.
Antara Foto Agency / Reuters
Students walk along a street as they are released from school to return home earlier due to the haze in Jambi, Indonesia's Jambi province, September 29, 2015 in this file picture taken by Antara Foto. Antara Foto/Wahdi Setiawan/via REUTERS/File Photo ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. FOR EDITORIAL USE ONLY. MANDATORY CREDIT. INDONESIA OUT.
NurPhoto via Getty Images
Dust pollution is seen in Dhaka, Bangladesh, on April 2. More than 90 percent of air pollution-related deaths occur in low- to middle-income countries.

Almost every single person worldwide breathes in toxic air on a regular basis, although the consequences for those living in developing regions are more deadly, according to a new World Health Organization study.

The report, released Wednesday, surveyed 4,300 cities in 108 countries, making it the most comprehensive study to date on ambient air pollution. It concluded that about 7 million people die annually from exposure to polluted air, which causes diseases including stroke, heart disease, lung cancer, chronic obstructive pulmonary diseases and respiratory infections like pneumonia. 

The trend is particularly acute in low- and middle-income countries across Africa and Asia, WHO said, as well as some eastern Mediterranean and South American nations. These regions account for more than 90 percent of all air pollution-related deaths. 

The primary issue in these areas, WHO added, is the lack of access to clean energy at home. More than half of these deaths were linked to cooking with polluting fuels and technologies. 

“Air pollution threatens us all, but the poorest and most marginalized people bear the brunt of the burden,” Tedros Adhanom Ghebreyesus, director-general of WHO, said in a statement. “It is unacceptable that over 3 billion people ― most of them women and children ― are still breathing deadly smoke every day from using polluting stoves and fuels in their homes. If we don’t take urgent action on air pollution, we will never come close to achieving sustainable development.”

Yet WHO has noticed that political leaders far and wide are beginning to take action, Tedros said. More cities are monitoring pollution levels, for instance, and some countries have begun implementing clean energy policies like clean vehicle standards.

As the United States recedes from the forefront of tackling the climate change issue, China has emerged as a global leader in the developing world. The world’s top polluter unveiled its plan to curb emissions in December and has strengthened the role of its environment ministry, though many countries in the developing world lack the resources and the infrastructure to implement like-minded policies.

It doesn’t help that investments from wealthy nations into clean energy initiatives worldwide have dropped. 

Clean energy investments in emerging markets slid by 27 percent in 2016 according to a Bloomberg New Energy Finance study released in November, and only 10 percent of the financing came from richer countries.

“The figures highlight the gap between talk and action when it comes to addressing climate and supporting clean energy,” BNEF analyst Ethan Zindler said.

Top 10 Cities With The Worst Air Pollution 2016