Environment

People continuously exposed to air pollution are at increased risk of dementia, especially if they also suffer from cardiovascular diseases, according to a study at Karolinska Institutet in Sweden published in the journal JAMA Neurology. Therefore, patients with cardiovascular diseases who live in polluted environments may require additional support from care providers to prevent dementia,
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Sometimes, fixing one problem can create another. Concrete production contributes 8 percent of global greenhouse gases, and demand continues to rise as populations and incomes grow. Yet some commonly discussed strategies to reduce the sector’s global GHG emissions could, under some scenarios, increase local air pollution and related health damages, according to a study from
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Sounds produced by human activities — anthropogenic sounds — account for more than 90 percent of the underwater soundscape in major freshwater habitats of New England. Rodney Rountree of The Fish Listener in Massachusetts, and Adjunct Associate Professor at the University of Victoria, and colleagues present these findings in the open-access journal PLOS ONE on
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Credit: CC0 Public Domain In 2016, scientists at MIT and elsewhere observed the first signs of healing in the Antarctic ozone layer. This environmental milestone was the result of decades of concerted effort by nearly every country in the world, which collectively signed on to the Montreal Protocol. These countries pledged to protect the ozone
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On March 17, the MODIS instrument that flies aboard NASA’s Terra satellite took this image of Tropical Cyclone Herold and showed a well-developed hurricane which is maintaining a clearer eye. Credit: NASA Worldview As Tropical Cyclone Herold intensified, its eye appeared more defined in imagery taken by NASA’s Terra satellite. A Tropical Cyclone Warning class
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Giant Clam shells (alive) Credit: YAN Hong, et al. Paleoclimate research offers an overview of Earth’s climate change over the past 65 million years or longer and helps to improve our understanding of the Earth’s climate systems. Unfortunately, our knowledge of weather-timescale extreme events (i.e., paleoweather occurring in days or even hours and minutes), such
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Average changes in maize yield in the five years following a nuclear war between Pakistan and India. Credit: Adapted from Jägermeyr et al., 2020 The concept of nuclear winter—a years-long planetary freeze brought on by airborne soot generated by nuclear bombs—has been around for decades. But such speculations have been based largely on back-of-the-envelope calculations
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Researchers at the Paul Scherrer Institute PSI have developed a new method to analyse particulate matter more precisely than ever before. With its help, they disproved an established doctrine: that molecules in aerosols undergo no further chemical transformations because they are enclosed in other suspended particulate matter. In the smog chamber at PSI, they analysed
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PhD student and first author Mehnaz Shams and Professor Chowdhury. Credit: WSU A Washington State University research team has found that nanoscale particles of the most commonly used plastics tend to move through the water supply, especially in fresh water, or settle out in wastewater treatment plants, where they end up as sludge, in landfills,
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NASA’s Terra satellite captured the formation of Tropical Storm 22S near northeastern Madagascar on March 13, 2020. Credit: NASA Worldview, Earth Observing System Data and Information System (EOSDIS) NASA’s Terra satellite passed over the Southern Indian Ocean and provided forecasters with a visible image of newly formed Tropical Storm 22S, located near northeastern Madagascar. The
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A positive IPO phase transition indicates more chance of an extreme drying trend, while the flood occurs at a negative IPO phase transition. Credit: Xin Huang The South Asian summer monsoon (SASM) provides the principal water supply for over a billion people. In good monsoon years, farmers reap a rich harvest, while in bad monsoon
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