Business
The head of British air traffic control on Wednesday blamed a "one in 15 million" event that caused the country's worst systems failure in almost 10 years, stranding thousands of passengers.
Sep 6, 2023
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Business
Delta Air Lines said Thursday that it has completed upgrading its fleet to protect key equipment against interference from 5G wireless signals, plugging a hole that could have disrupted flights during low visibility.
Sep 1, 2023
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Energy & Green Tech
On June 12 this year, the UK's last remaining coal-fired power station was awoken from a 46-day slumber to meet demand for electricity to run air-conditioning units.
Aug 18, 2023
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8
Energy & Green Tech
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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24
Energy & Green Tech
Our climate is changing, and airlines are under pressure to reduce emissions from air travel. For many of us, especially in Australia, flying is an essential form of transport, so how can we reduce its environmental impact? ...
Aug 8, 2023
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21
Energy & Green Tech
Picture two homes on the same street: one constructed in the 1950s and the other in the 1990s. There are no trees or other shade. The air conditioning units are identical, recently replaced, and operating perfectly. Identical ...
Aug 3, 2023
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Engineering
In June, the American Society of Heating and Air-Conditioning Engineers (ASHRAE) approved Standard 241, which establishes minimum requirements for building owners, operators and professionals to improve indoor air quality ...
Aug 2, 2023
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39
Energy & Green Tech
With air conditioner demand surging, scientists are looking for ways to improve the energy efficiency of cooling systems and limit damaging emissions that accelerate global warming.
Aug 2, 2023
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1
Energy & Green Tech
They are ubiquitous in the United States, controversial in Europe and coveted in South Asia. As heat waves intensify across the world, air conditioning has taken center stage.
Aug 2, 2023
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3
Engineering
Temperatures around the world are soaring. Both California's Death Valley and China's Xinjiang region have seen temperatures climb above the 50℃ mark. A blistering heat wave is also sweeping across the Mediterranean, causing ...
Jul 21, 2023
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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
