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Evidence from glacier ice: Until it was banned, leaded gasoline dominated the anthropogenic lead emissions in South America

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Leaded gasoline was a larger emission source of the toxic heavy metal lead than mining in South America, even though the extraction of metals from the region’s mines historically released huge quantities of lead into the environment, according to a study by researchers from the Paul Scherrer Institute PSI and the University of Bern.

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Study finds megacity traffic soot can reach high altitudes and be transported over long distances, contributing to global warming

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An open-access paper on the work is published in the journal Atmospheric Environment. The conurbation of the metropolitan area of La Paz/El Alto is one of the fastest growing urban settlements in South America with the particularity of being located in a very complex terrain at a high altitude.

Bolivia 247
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TOAR shows present-day global ozone distribution and trends relevant to health; public database

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Source: University of Leicester. In some parts of Asia, Africa and South America, the researchers identified data gaps which prevented them from characterizing ozone pollution exposure patterns. However, overall, Southern Hemisphere sites tend to have lower ozone pollution levels, and fewer days above 70 ppb.

Ozone 255
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Study finds some improved cookstoves may emit more black carbon pollution than traditional mud cookstoves

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The researchers acknowledge funding from private donors, the National Science Foundation, the Swedish International Development Agency, the United Nations Environment Programme, the Vetlesen Foundation and the Alderson Foundation. Abhishek Kar, Ibrahim H. Rehman, Jennifer Burney, S.

Pollution 231
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Study Finds Ozone, Nitrogen Change the Way Rising CO2 Affects Earths Water

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Benjamin Felzer, Lehigh University. Plants that release less water also take less of it from the environment. Along the way, it accumulates excess nutrients and pollutants before emptying into waterways, where it affects the health of fish, algae, and shellfish and contaminate drinking water and beaches. Cronin, J. Melillo, D.

Ozone 186