The role of community conversation in improving air quality

Assessments of how transportation pollution affects health often fail to prioritize the needs or concerns of communities experiencing disproportionate exposure to environmental hazards, such as low-income areas or communities ...

Heat claims 175,000 lives a year in Europe: WHO

Heat kills over 175,000 people a year in Europe, where temperatures are rising quicker than the rest of the globe, the World Health Organization's (WHO) European branch said Thursday.

Economists uncover hidden influence of top campaign donors

The death of a top donor during an electoral cycle decreases the likelihood that a candidate will be elected by more than three percentage points, according to an innovative new study by Cornell economists and colleagues.

Unique mechanism protects pancreatic cells from inflammation in mice

Researchers from the University of Cologne have revealed a mechanism protecting pancreatic β-cells, which are crucial for insulin production from inflammatory cell death. The study investigated the role of receptor-interacting ...

Study links nanoparticles to oxidative stress and neuron death

Researchers at the University of Kentucky have a better understanding of the regulation of extracellular vesicles by oxidative stress and how these vesicles spread oxidative stress and may damage neurons. Extracellular vesicles ...

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Death

Death is the permanent termination of the biological functions that define a living organism. It refers to both a particular event and to the condition that results thereby. The true nature of the latter has for millennia been a central concern of the world's religious traditions and of philosophical enquiry. Many religions maintain faith in either some kind of afterlife or reincarnation. The effect of physical death on any possible mind or soul remains for many an open question.

Animals almost without exception (see hydra) die in due course from senescence. Intervening phenomena which commonly bring death earlier include malnutrition, predation, disease, accidents resulting in terminal physical injury, or, in extreme circumstances, grave ecosystem disruption. Intentional human activity causing death includes suicide, homicide, and war. Roughly 150,000 people die each day across the globe. Death in the natural world can also occur as an indirect result of human activity: an increasing cause of species depletion in recent times has been destruction of ecological systems as a consequence of the widening spread of industrial technology.

Death in this context is now seen as less an event than a process: conditions once considered indicative of death are now reversible. Where in the process a dividing line is drawn between life and death depends on factors beyond the presence or absence of vital signs. In general, clinical death is neither necessary nor sufficient for a determination of legal death. A patient with working heart and lungs determined to be brain dead can be pronounced legally dead without clinical death occurring. Precise medical definition of death, in other words, becomes more problematic, paradoxically, as scientific knowledge and technology advance.

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