Air France, Hop! to shed 7,580 jobs: management
Air France management said Friday it planned to eliminate 7,580 jobs at the airline and its regional unit Hop! by the end of 2022 because of the coronavirus crisis.
Jul 3, 2020
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Business
Page 25 - News tagged with air
Energy & Green Tech
Modular facade with integrated systems technology supplies buildings with renewable energy
The rate of renovation in the building sector is still too low to achieve the energy transition by the target date set by the German federal government. However, increased use of prefabricated components can help accelerate ...
Jan 3, 2022
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Energy & Green Tech
Germany's new big hope against warming—heat pumps
As Germany looks to a future without fossil fuels, a big white boxy appliance is generating a lively debate—and often a heated one—for its potential to replace emissions-heavy oil and gas boilers.
Jul 7, 2023
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Energy & Green Tech
Chinese company gives leftover hotpot oil second life as jet fuel
At an upmarket restaurant in the hotpot-loving Chinese city of Chengdu, diners plunge sliced meat and vegetables into cauldrons of spicy, oily broth, largely unaware that their leftovers are set to take on a second life as ...
Nov 21, 2023
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Security
'Holy moly!': Inside Texas' fight against a ransomware hack
It was the start of a steamy Friday two Augusts ago when Jason Whisler settled in for a working breakfast at the Coffee Ranch restaurant in the Texas Panhandle city of Borger. The most pressing agenda item for city officials ...
Jul 26, 2021
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Energy & Green Tech
'Heating hammer': Germany huffs and puffs over climate law
When Maike Biert was choosing a new heating system for her house in western Germany, she balked at the huge cost of installing a heat pump, instead opting for a gas boiler.
Jun 16, 2023
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Energy & Green Tech
US to invest $1.2 bn on facilities to pull carbon from air
The US government said Friday it will spend up to $1.2 billion for two pioneering facilities to vacuum carbon out of the air, a historic gamble on a still developing technology to combat global warming that is criticized ...
Aug 11, 2023
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Other
New scheduling system could help reduce flight delays
Scheduling and coordinating air traffic can be difficult, but taking the airlines' and passengers' delay costs into account can actually save airlines money and result in fewer delays, according to a new study from Binghamton ...
Nov 13, 2018
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Software
Working towards less noise and better fuel efficiency during airport runway approach
The approach to an airport runway is a real challenge for pilots: reducing speed, extending flaps and speed brakes and much more—all with as little noise and fuel consumption as possible. Moreover, air traffic control restricts ...
Oct 6, 2022
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Engineering
Underground water pipes: Another way for cities to keep cool
As Paris swelters in record-breaking heat, visitors to some of the French capital's iconic landmarks are being kept cool without even knowing it by a labyrinthine network of underground water pipes.
Jul 25, 2019
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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
