Remove Environment Remove Global Remove Pollution Remove South America
article thumbnail

Global study links daily exposure to ozone pollution to increased risk of death

Green Car Congress

Ground level ozone is a highly reactive gas commonly found in urban and suburban environments, formed when pollutants react in sunlight. Recent reviews suggest that 80% of the world’s population in urban areas are exposed to air pollution levels above the WHO threshold. g/m 3 (WHO), 120 ?g/m Vicedo-Cabrera et al.

Ozone 243
article thumbnail

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

Green Car Congress

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
article thumbnail

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

Green Car Congress

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.

article thumbnail

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

Green Car Congress

People living in parts of southern Europe, South Korea and southern Japan and China also experienced more than 15 days a year of ozone levels above 70 ppb. In some parts of Asia, Africa and South America, the researchers identified data gaps which prevented them from characterizing ozone pollution exposure patterns.

Ozone 255
article thumbnail

Study using satellite data finds rate of urban growth much greater than previously thought

Green Car Congress

In a paper in Nature Sustainability , they report that global urban extent has expanded by 9,687?km km 2 per year—a rate four times greater than a previous estimate, suggesting an unprecedented rate of global urbanization. Urban area dynamics during 1985–2015 at the global and continent scales.

article thumbnail

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

Green Car Congress

In addition, black soot released into the atmosphere is a major factor in global warming. 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.

Pollution 231
article thumbnail

Climate Expert: Don't Call It Geoengineering

Cars That Think

If they meet all the pledges they've made for emission reductions by 2030, global temperature rise will be at 2.4° Many people see such actions as "playing God," and worry about the unintended consequences of meddling with nature on a global scale. Humanity is already reducing global warming. by spewing pollution into the air.

Climate 144