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Perspective: Enteric methane mitigation and its impact on livestock hydrogen emissions.
J Dairy Sci
January 2025
Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139.
In a hydrogen-based economy future, hydrogen leakage is becoming an environmental concern. Ruminants naturally produce small amounts of hydrogen, which is emitted in the environment along with other fermentation gases, such as the GHG methane and carbon dioxide. Here, for the first time, we estimated hydrogen emissions from the global ruminant livestock at 527 kt/yr (95% CI: 399, 654), or about 3.
View Article and Find Full Text PDFGeological Net Zero and the need for disaggregated accounting for carbon sinks.
Nature
November 2024
Department of Geography, Simon Fraser University, 8888 University Drive, Burnaby, B.C., Canada.
Achieving net zero global emissions of carbon dioxide (CO), with declining emissions of other greenhouse gases, is widely expected to halt global warming. CO emissions will continue to drive warming until fully balanced by active anthropogenic CO removals. For practical reasons, however, many greenhouse gas accounting systems allow some "passive" CO uptake, such as enhanced vegetation growth due to CO fertilisation, to be included as removals in the definition of net anthropogenic emissions.
View Article and Find Full Text PDFEast Asian summer monsoon delivers large abundances of very-short-lived organic chlorine substances to the lower stratosphere.
Proc Natl Acad Sci U S A
March 2024
NASA Goddard Space Flight Center, Greenbelt, MD 20771.
Deep convection in the Asian summer monsoon is a significant transport process for lifting pollutants from the planetary boundary layer to the tropopause level. This process enables efficient injection into the stratosphere of reactive species such as chlorinated very-short-lived substances (Cl-VSLSs) that deplete ozone. Past studies of convective transport associated with the Asian summer monsoon have focused mostly on the south Asian summer monsoon.
View Article and Find Full Text PDFSix-month course and outcome of treatment-seeking individuals with alcohol dependence syndrome.
Indian J Psychiatry
November 2023
Department of Psychiatry, Pondicherry Institute of Medical Sciences, Kalapet, Puducherry, India.
Background: Despite the availability of several pharmacological and nonpharmacological treatments, a significant proportion of patients with alcohol dependence relapse to alcohol use after treatment. The objectives of this study were to determine the 6-month course and outcome in treatment-seeking individuals with alcohol dependence syndrome and to determine the sociodemographic and clinical correlates of the outcome in these patients.
Materials And Methods: A longitudinal observational study was conducted in treatment-seeking male patients with alcohol dependence syndrome.
Inequalities and mental health during the Coronavirus pandemic in the UK: a mixed-methods exploration.
BMC Public Health
September 2023
Cambridge Public Health Interdisciplinary Research Centre, Department of Psychiatry, University of Cambridge School of Clinical Medicine, Cambridge Biomedical Campus, Box 113, Cambridge, CB2 0SR, UK.
Background: The World Health Organisation declared the novel Coronavirus disease (COVID-19) a global pandemic on 11th March 2020. Since then, the world has been firmly in its grip. At the time of writing, there were more than 767,972,961 million confirmed cases and over 6,950,655 million deaths.
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