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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.'
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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.
It's already having a severe impact on people’s health and quality of life, a UN report warns.
Put the plastic wrap down.
Poor air quality is now the fourth largest threat to our health, according to a new IEA report.
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Every person can make a difference.
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Here's more evidence that air pollution is a major global health problem.
A new proposal would get gas-guzzlers off the road in the next decade.