Dropping the base: Could climate change make rivers and lakes more acidic?

We can thank the Clean Air Act for doing a lot to improve our environment, including helping to make rivers and lakes less acidic. But in some places, climate change has the potential to reverse some of that progress. In this study, scientists set out to investigate a potentially hidden impact of climate change: making rivers and streams more acidic.

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A Hazy Outlook over the North China Plain

Beijing, the cultural and political capital of China, is home to a massive population of almost 25 million people has long been known for its air pollution. A team of scientists at Peking University in Beijing looked at the chemistry of the city’s haze and found something surprising: the inorganic mass fraction, normally dependent on only human activities, increased with increasing relative humidity. That’s right: how bad anthropogenic emissions actually are depends on the weather. Exploring this trend will help us to understand how haze forms, which could help Beijing and other major cities to manage their air pollution problems more effectively.

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Will Climate Policies Give Us Cleaner Air?

Clean air is very important to keep people healthy. While most people in the US are fortunate to have reasonably clean air, many people still get sick and die every year from dirty air. Around the world people are worried about the impacts of climate change. There may be a way to reduce the impacts from both air pollution and climate change at once.

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Putting the cart before the horse: the danger of oil sands before the pipeline

The story of oil sands – one unconventional source of oil found in Canada – has a newly identified danger right in its backyard: the exhaust from the diesel trucks that carry the material across the site contains a toxin that may affect the health of people in communities downwind.

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How much does pollution increase as cities grow?

People worldwide are increasingly living in cities. Urban life has many benefits including economic growth, but large concentrations of people and their activities can lead to increased pollution. A recent study evaluated the trade-offs between pollution and urbanization to see if the economic benefits outweigh the negative health impacts.

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