Energy & Green Tech
At the foot of an Icelandic volcano, a newly-opened plant is sucking carbon dioxide from the air and turning it to rock, locking away the main culprit behind global warming.
Nov 2, 2021
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Business
Emirates Airline will hold talks with US aviation giant Boeing over the delayed 777X "before and during" this month's Dubai Air Show, the company's chief executive said on Monday.
Nov 1, 2021
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Business
As aviation struggles to emerge from the historic, pandemic-driven downturn, another longer-term challenge already looms. Concern about air travel's contribution to climate change threatens to curtail growth of an industry ...
Oct 27, 2021
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Energy & Green Tech
Air passengers will soon be able to cut their carbon footprint when traveling on flights that are routed using satellites.
Oct 27, 2021
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Business
Under huge pressure to go green, the aviation industry needs to spend billions of dollars to become more climate-friendly in what risks ramping up fares and making air travel the preserve of the rich once again.
Oct 22, 2021
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Engineering
Despite their deceptively simple function of transferring heat from one medium to another, heat exchangers are of utmost importance in machines. Heat exchange between two fluids depends on the material of the heat exchangers, ...
Oct 20, 2021
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Engineering
From birds in the sky to fish in the sea, nature's creatures possess characteristics naturally perfected over millennia. Studying them leads engineers to create new technologies that are essential to our way of life today. ...
Oct 20, 2021
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Business
Italy's new national carrier ITA Airways took its debut flight Friday, closing a turbulent chapter that witnessed the decline of the country's storied but ill-fated Alitalia after 74 eventful years.
Oct 15, 2021
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Engineering
Engineers still have some kinks to work out before flying taxis become reality. But when they do hit the market, what will demand look like at different times and places? That's one question Suchithra Rajendran and Sharan ...
Oct 13, 2021
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Internet
Facebook on Friday said users around the world again had problems accessing its services for hours due to a tweak of its system, just days after a massive outage caused in a similar fashion.
Oct 9, 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
