Health

Memory is damaged by air pollution, researchers find

New research from the University of Warwick shows that human memory is significantly worse in parts of England with high levels of nitrogen dioxide (NO2) and air particulates (PM10). The difference in memory quality between ...

Health

Aspirin may prevent air pollution harms

A new study is the first to report evidence that nonsteroidal anti-inflammatory drugs (NSAIDs) like aspirin may lessen the adverse effects of air pollution exposure on lung function. The team of researchers from the Columbia ...

Health

Study eyes air pollution, noise links to epilepsy

Epilepsy, a neurological disorder in which patients experience recurring seizures, can develop from a number of causes. Genetics plays a role, while some people develop it as a result of conditions like stroke, tumors or ...

Health

Curbing diesel emission could reduce big city mortality

U.S. cities could see a decline in mortality rates and an improved economy through midcentury if federal and local governments maintain stringent air pollution policies and diminish concentrations of diesel freight truck ...

Psychology & Psychiatry

Military sees frustrating trend as suicides spike

Military suicides have surged to a record high among active duty troops, continuing a deadly trend that Pentagon officials say is frustrating and they are struggling to counter.

Health

Studies link air pollution to mental health issues in children

Three new studies by scientists at Cincinnati Children's Hospital Medical Center, in collaboration with researchers at the University of Cincinnati, highlight the relationship between air pollution and mental health in children.

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Earth's atmosphere

The Earth's atmosphere is a layer of gases surrounding the planet Earth that is retained by the Earth's gravity. It has a mass of about five quadrillion metric tons. Dry air contains roughly (by volume) 78.08% nitrogen, 20.95% oxygen, 0.93% argon, 0.038% carbon dioxide, and trace amounts of other gases. Air also contains a variable amount of water vapor, on average around 1%. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation, warming the surface through heat retention (greenhouse effect), and reducing temperature extremes between day and night.

There is no definite boundary between the atmosphere and outer space. It slowly becomes thinner and fades into space. An altitude of 120 km (75 mi) marks the boundary where atmospheric effects become noticeable during atmospheric reentry. The Kármán line, at 100 km (62 mi), is also frequently regarded as the boundary between atmosphere and outer space. Three quarters of the atmosphere's mass is within 11 km (6.8 mi; 36,000 ft) of the surface.

This text uses material from Wikipedia, licensed under CC BY-SA