Setting the airways for urban air mobility
Flying drones are doing great things today, from powerline inspection to security surveillance to precision agriculture (fertilizer and pesticide application).
Jun 17, 2021
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Engineering
Page 37 - News tagged with air
Automotive
How artificial intelligence is changing the future of air transportation
A George Washington University School of Engineering and Applied Science professor is working on an interdisciplinary research project funded by NASA that aims to design and develop a safety management system for electric ...
Jun 11, 2021
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Business
United Airlines sees a supersonic future
United Airlines aims to bring back supersonic travel before the decade is over with a plane that is currently just an artist's drawing—even the prototype hasn't flown yet.
Jun 3, 2021
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Energy & Green Tech
How cleaning up coolants can cool the climate–why HFCs are getting phased out from refrigerators and air conditioners
The U.S. Environmental Protection Agency is moving to eliminate a class of chemicals widely used as coolants in refrigerators, air conditioners and heat pumps.
May 4, 2021
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Energy & Green Tech
COVID-19 could end our dependence on cars—if we 'build back better'
When discussing low-carbon transportation and the question of why cars play such a dominant role in our society, it is often tempting to fall back on a comfortable and familiar answer: We drive cars because we like them!
Apr 26, 2021
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Business
Alaska Air touts road map to 'net zero' emissions
Alaska Airlines on Wednesday announced a plan to join the Amazon Climate Pledge and reduce the airline's carbon emissions to net zero by 2040, with interim goals for specific cuts in carbon, waste, and water use by 2025.
Apr 22, 2021
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Energy & Green Tech
Cool and COVID-safe: How radiant cooling could keep our cities comfortable and healthy
A novel system of chilled panels that can replace air conditioning can also help reduce the risk of indoor disease transmission, suggests new analysis from the University of British Columbia, University of Pennsylvania and ...
Apr 20, 2021
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Business
New Lyft program lets users book a ride to get their COVID vaccine or fund a ride for others
Lyft launched new website to help people book COVID-19 vaccine rides or to fund a ride for someone in need, according to a blog post from the rideshare company.
Mar 16, 2021
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Business
Expensive airline tickets and political efforts: How the aviation industry must change after COVID-19
COVID-19 has led to a dramatic decrease in passenger air travel, which has also resulted in a decrease in carbon dioxide emissions. The reduced demand for passenger air travel brings with it an opportunity for the aviation ...
Mar 16, 2021
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Business
COVID variants to slow air traffic recovery: IATA
Global air passenger traffic will recover more slowly than expected this year because coronavirus variants have created strong headwinds, an industry group warned Wednesday.
Feb 24, 2021
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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
