Consumer & Gadgets
Heatwaves in numerous countries during 2022 sent all-time temperature records tumbling. On the day before the UK endured a shaded air temperature of 40°C for the first time ever, the Met Office issued its first ever red ...
Nov 3, 2022
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Business
German airline giant Lufthansa said Thursday that demand for air travel will return to pre-crisis levels only in 2024 or even later as it announced forced layoffs on the back of a significant loss.
Aug 6, 2020
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Business
Air Canada on Friday announced a loss of more than CAN$1.7 billion (US$1.27 billion) in the second quarter due to the "devastating effects" of the coronavirus pandemic.
Jul 31, 2020
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Business
Perhaps nowhere is the world's lack of flights due to the coronavirus pandemic more clearly felt than at Dubai International Airport, for years the world's busiest for international travel.
Jun 10, 2020
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Business
Air France-KLM announced Wednesday the "definitive end" of operations of the world's biggest commercial airliner, the A380, owing to the devastating coronavirus impact on air travel.
May 20, 2020
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Energy & Green Tech
A method to predict and avoid undesirable combustion events in advanced engines, such as knocking and super-knock, implicates the initial mix of fuel and air.
May 20, 2020
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Business
Governments have provided airlines $123 billion to help weather the coronavirus storm, the global aviation industry said Tuesday, warning though that the assistance was adding to surging debt in the industry.
May 26, 2020
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Engineering
Southwest Research Institute engineers developed a new certification cycle, the Low-Load Cycle (LLC), to gauge the performance of heavy-duty diesel engine aftertreatment systems in low-load conditions. Aftertreatment systems ...
Nov 12, 2019
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Automotive
The U.S. Environmental Protection Agency is making Volkswagen Group correct fuel economy labels for about 98,000 gasoline-powered vehicles.
Aug 30, 2019
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Business
Boeing announced Tuesday that it sealed an order to sell 19 freighter planes to UPS in the latest sign of how surging e-commerce use is boosting the air cargo market.
Dec 22, 2021
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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
