News tagged with atmosphere
Related topics: earth , carbon dioxide , ocean , nasa , planets
Atmosphere
An atmosphere (from Greek ατμός - atmos, 'vapor' + σφαίρα - sphaira, 'sphere') is a layer of gases that may surround a material body of sufficient mass, by the gravity of the body, and are retained for a longer duration if gravity is high and the atmosphere's temperature is low. Some planets consist mainly of various gases, but only their outer layer is their atmosphere (see gas giants).
The term stellar atmosphere describes the outer region of a star, and typically includes the portion starting from the opaque photosphere outwards. Relatively low-temperature stars may form compound molecules in their outer atmosphere. Earth's atmosphere, which contains oxygen used by most organisms for respiration and carbon dioxide used by plants, algae and cyanobacteria for photosynthesis, also protects living organisms from genetic damage by solar ultraviolet radiation. Its current composition is the product of billions of years of biochemical modification of the paleoatmosphere by living organisms.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
Prepare your barbeque properly this summer, warn scientists
As we break free from the shackles of an unusually long winter, thoughts may be turning towards that first barbecue of the summer. But before we lay down the season's first slab of meat, scientists are urging ...
Health
Apr 23, 2013 |
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Combined hyperbaric O2: Normobaric hyperoxia associated with improved outcome of severe TBI
Researchers at the Hennepin County Medical Center, University of Minnesota, and Minneapolis Medical Research Foundation (Minneapolis, Minnesota) report that the combined use of hyperbaric oxygen and normobaric hyperoxia therapies ...
Neuroscience
Mar 19, 2013 |
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Rainfall, brain infection linked in sub-Saharan Africa
(Medical Xpress)—The amount of rainfall affects the number of infant infections leading to hydrocephalus in Uganda, according to a team of researchers who are the first to demonstrate that these brain infections ...
Diseases, Conditions, Syndromes
Jan 04, 2013 |
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Foggy perception slows us down
Fog is an atmospheric phenomenon that afflicts millions of drivers every day, impairing visibility and increasing the risk of an accident. The ways people respond to conditions of reduced visibility is a ...
Medical research
Oct 31, 2012 |
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An expanded Heathrow Airport would lead to 100 more pollution-related early deaths annually in the U.K. by 2030
According to the U.K.'s Department for Transport, demand for air travel in the country will more than double by 2030, from 127 million to 300 million passengers per year. A debate over how to accommodate ...
Health
Oct 19, 2012 |
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Researchers find acidic pH microenvironments in tumors aid tumor cell survival
Researchers at Moffitt Cancer Center and colleagues at the University of South Florida and Wayne State University have discovered that tumor cell survival relies on adaptation to acidic conditions in the tumor microenvironment. ...
Cancer
Sep 06, 2012 |
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Dietary cadmium may be linked with breast cancer risk
Dietary cadmium, a toxic metal widely dispersed in the environment and found in many farm fertilizers, may lead to an increased risk of breast cancer, according to a study published in Cancer Research, a journal of the Am ...
Cancer
Mar 15, 2012 |
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Cell dysfunction linked to obesity and metabolic disorders
By measuring the radioactive isotope carbon-14, scientists at Karolinska Institutet have revealed an association between lipid cell dysfunction and diseases such as obesity, diabetes and blood lipid disorders. The study, ...
Medical research
Sep 26, 2011 |
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Future climate change may increase asthma attacks in children
Mount Sinai School of Medicine researchers have found that climate change may lead to more asthma-related health problems in children, and more emergency room (ER) visits in the next decade.
Health
Aug 30, 2011 |
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More questions than answers remain concerning effects of airplane travel on insulin pump delivery
Despite recent concerns that changes in atmospheric pressure during airplane travel may affect the amount of insulin delivered via pump devices, the current evidence is limited and it would be unwise to overreact ...
Other
Aug 30, 2011 |
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