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Tiny particles of pollution - inside samples of brain tissue - could be contributing to diseases such as Alzheimer's, according to new research.

The study, led by scientists at Lancaster University, raises a host of new questions about the health risks of air pollution.

Our Science Editor David Shukman assesses its findings.

 

 

12 MAY 2016 | GENEVA - More than 80% of people living in urban areas that monitor air pollution are exposed to air quality levels that exceed WHO limits. While all regions of the world are affected, populations in low-income cities are the most impacted.

According to the latest urban air quality database, 98% of cities in low- and middle income countries with more than 100 000 inhabitants do not meet WHO air quality guidelines. However, in high-income countries, that percentage decreases to 56%.

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