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They're among the top three most harmful pollutants threatening marine wildlife.
There’s literally no escaping mankind’s mess.
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Oil companies obtained rights to the area before the giant reef was discovered.
Antara Foto Agency / Reuters
The pollution has put northern China on red alert.
Jason Lee / Reuters
And more than 500,000 of them are dying each year as a result, according to a new UNICEF report.
Blue skies are a luxury in places where pollution fills the sky.
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With Leo's powers combined, it might just happen.
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A young inventor has a cleanup plan -- but he has to understand the enormity first.
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Levels of acid in the atmosphere have fallen almost to preindustrial levels.
Air pollution may have caused more than 100,000 deaths last year, a new study finds.
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'As far as we know, the color of the river is today no different from normal.'
Anthony Delanoix Upsplash
The nanoparticles formed during combustion possibly contribute to Alzheimer's disease.
Anti-ageing creams are so 2015.
If it's not extremely easy, people won't do it.