News tagged with air
China's pollution related to E-cars may be more harmful than gasoline cars, researchers find
Electric cars have been heralded as environmentally friendly, but findings from University of Tennessee, Knoxville, researchers show that electric cars in China have an overall impact on pollution that could be more harmful ...
14 hours ago |
3.2 / 5 (12) |
14
|
Stimulation of brain hormone action may improve pneumonia survival
An international research team may have found a way to block a second wave of death that can result from pneumonia treatment.
Jan 31, 2012 |
4 / 5 (1) |
0
|
Food crops damaged by pollution crossing continents
(PhysOrg.com) -- Man-made air pollution from North America causes Europe to lose 1.2 million tonnes of wheat a year, a new study has found.
Jan 30, 2012 |
4.4 / 5 (17) |
21
|
Study finds association between air pollution and cognitive decline in women
A large, prospective study led by a researcher at Rush University Medical Center indicates that chronic exposure to particulate air pollution may accelerate cognitive decline in older adults. The results of the study will ...
9 hours ago |
not rated yet |
0
|
Even moderate air pollution can raise stroke risks
Air pollution, even at levels generally considered safe by federal regulations, increases the risk of stroke by 34 percent, Beth Israel Deaconess Medical Center researchers have found.
9 hours ago |
2 / 5 (1) |
0
|
A better picture of clouds
Some of us look at clouds and see animal shapes. Scientists are looking beyond. For the first time, a team of scientists led by Pacific Northwest National Laboratory used actual measurements of clouds and ...
Space & Earth / Earth Sciences
16 hours ago |
not rated yet |
0
China's pollution puts a dent in its economy
Although China has made substantial progress in cleaning up its air pollution,a new MIT study shows that the economic impact from ozone and particulates in its air has increased dramatically. ...
17 hours ago |
5 / 5 (2) |
2
Global warming could kill off snails
(PhysOrg.com) -- Climate change models must be reworked in a bid to save some of the world’s smallest and slimiest creatures from extinction, a Flinders University PhD candidate warns.
Feb 07, 2012 |
5 / 5 (1) |
1
China bans airlines from paying EU carbon charges
China said Monday it has banned its airlines from complying with an EU scheme to impose charges on carbon emissions opposed by more than two dozen countries including India, Russia and the United States.
Feb 06, 2012 |
5 / 5 (2) |
1
India's air the worst, says annual study
India has the worst air quality in the world, poorer even than its neighbour China, according to an annual survey based at Yale and Columbia universities in the United States.
Feb 02, 2012 |
5 / 5 (7) |
5
New study shows correlation between summer Arctic sea ice cover and winter weather in Central Europe
Even if the current weather situation may seem to speak against it, the probability of cold winters with much snow in Central Europe rises when the Arctic is covered by less sea ice in summer. Scientists of the Research Unit ...
Space & Earth / Earth Sciences
Feb 01, 2012 |
4.8 / 5 (5) |
0
NASA releases Sector 33 air traffic control educational game app
NASA has released a new educational game with an air traffic control theme for Apple iPhone and iPad devices. The Sector 33 application is designed to challenge students in middle school and above to use basic math and problem-solving ...
Feb 01, 2012 |
5 / 5 (1) |
0
Beijing air pollution soars with fireworks smoke
(AP) -- Clouds of smoke from Lunar New Year fireworks sent air pollution readings soaring in the more sensitive measurement system Beijing started using a little more than a week ago, reports said Sunday.
Jan 29, 2012 |
5 / 5 (2) |
5
Asthma rate and costs from traffic-related air pollution are much higher than once believed
A research team led by University of Massachusetts Amherst resource economist Sylvia Brandt, with colleagues in California and Switzerland, have revised the cost burden sharply upward for childhood asthma and for the first ...
Jan 26, 2012 |
1 / 5 (1) |
3
Flights rerouted as massive solar storm slams Earth
Solar radiation from a massive sun storm -- the largest in nearly a decade -- collided with the Earth's atmosphere, prompting an airline to reroute flights and skywatchers to seek out spectacular light displays.
Space & Earth / Space Exploration
Jan 25, 2012 |
4.7 / 5 (3) |
0
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.
For more information about Earth's atmosphere, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
