Business
One of the largest producers of carbon emissions is air travel, yet many view flying as a necessary enabler of tourism and international business. One promising way for consumers to take responsibility for their carbon emissions ...
Jan 27, 2022
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Hardware
Transponders are part of the mandatory equipment of civil aircraft: they are electronic devices that respond to radar interrogations and thus help air traffic control and the air collision avoidance systems of other aircraft ...
Jan 21, 2022
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Energy & Green Tech
NIMS and Softbank Corp. have developed a lithium-air battery with an energy density over 500Wh/kg—significantly higher than that of current lithium ion batteries. The research team then confirmed that this battery can be ...
Jan 20, 2022
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Business
Major US carriers stumbled through another money-losing quarter at the end of the 2021 but remain confident of a travel recovery later in 2022, based in part on hopes that Covid-19 will soon evolve into an ordinary and seasonal ...
Jan 20, 2022
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Energy & Green Tech
Two centuries of burning fossil fuels has put more carbon dioxide, a powerful greenhouse gas, into the atmosphere than nature can remove. As that CO2 builds up, it traps excess heat near Earth's surface, causing global warming. ...
Jan 19, 2022
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Business
Delta Air Lines said Thursday it was past the worst of the Omicron COVID-19 surge as it projected a strong spring travel season while reporting a fourth-quarter loss.
Jan 13, 2022
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Energy & Green Tech
Researchers have provided an important insight into the cultural taboo surrounding an innovative 'green' technology that enables users to transform their domestic toilet waste into biogas.
Jan 12, 2022
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Business
Airline ticket sales fell sharply at the end of 2021, the International Air Transport Association (IATA) said Wednesday, blaming governments for having "over-reacted" to the Omicron COVID variant by closing borders.
Jan 12, 2022
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Energy & Green Tech
Many of China's households still rely on small coal stoves for heat, which causes air pollution that damages health. To address these problems, the Chinese government launched a five-year "Clean Heating Plan" in 2017 with ...
Jan 10, 2022
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Automotive
With personal health a rising priority around the world, the auto industry is on the hunt for new gadgets and accessories to make the car cockpit feel safer for the driver and passengers.
Jan 8, 2022
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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
