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Environmental Research Letters
Microplastic debris floating at the ocean surface can harm marine life. Understanding the severity of this harm requires knowledge of plastic abundance and distributions. Dozens of expeditions measuring microplastics have been carried out since the 1970s, but they ha...ve primarily focused on the North Atlantic and North Pacific accumulation zones, with much sparser coverage elsewhere. Here, we use the largest dataset of microplastic measurements assembled to date to assess the confidence we can have in global estimates of microplastic abundance and mass. We use a rigorous statistical framework to standardize a global dataset of plastic marine debris measured using surface-trawling plankton nets and coupled this with three different ocean circulation models to spatially interpolate the observations. Our estimates show that the accumulated number of microplastic particles in 2014 ranges from 15 to 51 trillion particles, weighing between 93 and 236 thousand metric tons, which is only approximately 1% of global plastic waste estimated to enter the ocean in the year 2010. These estimates are larger than previous global estimates, but vary widely because the scarcity of data in most of the world ocean, differences in model formulations, and fundamental knowledge gaps in the sources, transformations and fates of microplastics in the ocean.
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Roubles de l’humeur
Chapitre E.4
Edition en français Traduction : Cora Cravero Sous la direction de : David Cohen Avec le soutien de la SFPEADA
Recommandations pour une approche de santé publique
Programme VIH/SIDA
This perspective draws on the record of ancient pathogengenomes and microbiomes illuminating patterns of infectious disease over the course of the Holocene in order toaddress the following question. How did major changes inliving circumstances involving the transition to and intensification of farmi...ng alter pathogens and their distributions? Answers to this question via ancient DNA researchprovide a rapidly expanding picture of pathogen evolution and in concert with archaeological and historical data, give a temporal and behavioral context for heath in the past that is relevant for challenges facing the world today, including the rise of novel pathogens.
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The Lancet Planetary Health Volume 6, ISSUE 4, e342-e349, April 01, 2022. Human impacts on earth-system processes are overshooting several planetary boundaries, driving a crisis of ecological breakdown. This crisis is being caused in large part by global resource extraction, which has increased dra...matically over the past half century. We propose a novel method for quantifying national responsibility for ecological breakdown by assessing nations’ cumulative material use in excess of equitable and sustainable boundaries.
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Cette pandémie est un défi commun pour l’ensemble de l’humanité dans l’ère de la mondialisation. À ce jour, le partage des ressources, des expériences et des leçons, qui que vous soyez, est notre seule chance de gagner. Le vrai remède à cette pandémie n’est pas l’isolement, mais... la coopération.
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Este documento técnico presenta las Normativas de Planificación Operativa
del Ministerio de Salud Pública y Bienestar Social para apoyar la
preparación del país y la respuesta ante el Novel Coronavirus (COVID-19).
IAEA Safety Standards for protecting people and the environment
The main message emerging from this new comprehensive global assessment is that premature death and disease can be prevented through healthier environments – and to a significant degree. Analysing the latest data on the environment-disease nexus and the devastating impact of environmental hazards ...and risks on global health, backed up by expert opinion, this report covers more than 100 diseases and injuries.
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Pour la formation du personnel des établissements sanitaires