News tagged with air
Airline industry split widens over EU carbon 'tax' row
A split widened within the aviation industry Tuesday over EU charges for carbon emissions, as Europe's low-cost carriers accused Chinese and US rivals of "gunboat" diplomacy against the system.
Feb 07, 2012 |
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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 |
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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 |
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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 |
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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) |
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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 |
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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 |
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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) |
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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 |
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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 |
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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) |
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NRL's SoloHI instrument selected for flight on solar orbiter mission
The Naval Research Laboratory's Solar Orbiter Heliospheric Imager (SoloHI), part of the Solar Orbiter mission, is headed for space. The European Space Agency (ESA) has chosen the Solar Orbiter mission as the ...
Space & Earth / Space Exploration
Jan 24, 2012 |
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Space Shuttle Discovery headed to the Smithsonian
(AP) -- The Smithsonian's National Air and Space Museum is preparing to welcome the space shuttle Discovery into its collection.
Space & Earth / Space Exploration
Jan 24, 2012 |
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Beijing releases pollution data; US figures higher
(AP) -- Caving to public pressure, Beijing environmental authorities started releasing more detailed air quality data Saturday that may better reflect how bad the Chinese capital's air pollution is. But one ...
Jan 21, 2012 |
4.7 / 5 (3) |
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Air Force launches military satellite into space
(AP) -- The Air Force has sent into space a satellite that is expected to improve communications with military drones in the Middle East and Southeast Asia.
Space & Earth / Space Exploration
Jan 20, 2012 |
3.3 / 5 (6) |
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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.
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.
