PlosOne December 10, 2014 https://doi.org/10.1371/journal.pone.0111913
Plastic pollution is ubiquitous throughout the marine environment, yet estimates of the global abundance and weight of floating plastics have lacked data, particularly from the Southern Hemisphere and remote regions. Here we re
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port an estimate of the total number of plastic particles and their weight floating in the world's oceans from 24 expeditions (2007–2013) across all five sub-tropical gyres, costal Australia, Bay of Bengal and the Mediterranean Sea conducting surface net tows (N = 680) and visual survey transects of large plastic debris (N = 891). Using an oceanographic model of floating debris dispersal calibrated by our data, and correcting for wind-driven vertical mixing, we estimate a minimum of 5.25 trillion particles weighing 268,940 tons. When comparing between four size classes, two microplastic <4.75 mm and meso- and macroplastic >4.75 mm, a tremendous loss of microplastics is observed from the sea surface compared to expected rates of fragmentation, suggesting there are mechanisms at play that remove <4.75 mm plastic particles from the ocean surface.
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Background
Low- and middle-income countries now experience the highest prevalence and mortality rates of cardiovascular disease.
Main text
While improving the availability and delivery of proven, effective therapies will no doubt mitigate this burden, we posit that studies evaluating cardiovasc
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ular disease risk factors, management strategies and service delivery, in diverse settings and diverse populations, are equally critical to improving outcomes in low- and middle-income countries. Focusing on examples drawn from four cardiovascular diseases — coronary artery disease, stroke, diabetes and kidney disease — we argue that ethnicity, culture and context matter in determining the risk factors for disease as well as the comparative effectiveness of medications and other interventions, particularly diet and lifestyle interventions.
Conclusion
We believe that a host of cohort studies and randomized control trials currently being conducted or planned in low- and middle-income countries, focusing on previously understudied race/ethnic groups, have the potential to increase knowledge about the cause(s) and management of cardiovascular diseases across the world.
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This topic brief highlights how nutrition and healthy diets support the achievement of education and learning objectives, and explains how intervention benefits can be amplified with a whole-school and systems approach. The recommended actions are i
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nformed by the Global Standards for health-promoting schools. This evidence-informed resource is intended for national education, health and associated sectors to support the strengthening of national school health programmes.
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This topic brief highlights how nutrition and healthy diets support the achievement of education and learning objectives, and explains how intervention benefits can be amplified with a whole-school and systems approach. The recommended actions are i
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nformed by the Global Standards for health-promoting schools. This evidence-informed resource is intended for national education, health and associated sectors to support the strengthening of national school health programmes.
more
This paper looks at the increasing use of 'new psychoactive substances', a term which is defined differently by different people, but which is here defined as 'narcotic drugs or psychotropic substances made available or used from the early to mid-20
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00s for their psychoactive properties'
Series: Series|Drug Use| Volume 394, ISSUE 10209, P1668-1684, November 02, 2019
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