Engineering
Buildings are Europe's largest energy consumer. They are responsible for about 40% of the energy consumed and 36 % of greenhouse gases emitted in the EU. However, a mere 1% undergo energy renovations each year. To meet Europe's ...
May 5, 2023
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Business
Greenhouse gas reduction, new jobs, new investment opportunities: the benefits of decarbonizing the electricity sector—one of the most polluting—are obvious. However, a transition to lower-carbon electricity production ...
May 2, 2023
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Business
The UAE's Emirates airline does not feel threatened by ambitious expansion plans in neighboring Saudi Arabia and welcomes increased competition, its president said on Tuesday.
May 2, 2023
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Robotics
Throughout history, war has been irrevocably changed by the advent of new technologies. Historians of war have identified several technological revolutions.
Apr 28, 2023
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Business
Pointing to persistently strong flying demand, Delta Air Lines offered a bullish spring season forecast Thursday as it reported a loss in the first quarter.
Apr 13, 2023
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Engineering
A technology that uses an electrostatic method to reduce ultrafine particles without a filter was developed for the first time in the world.
Apr 11, 2023
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14
Energy & Green Tech
Nearly 20% of today's electricity in the United States comes from nuclear power. The U.S. has the largest nuclear fleet in the world, with 92 reactors scattered around the country. Many of these power plants have run for ...
Apr 10, 2023
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202
Energy & Green Tech
Scientists from Nanyang Technological University, Singapore (NTU Singapore) have invented a more sustainable and green method for cooling down servers in data centers, potentially reducing up to 26% in both energy costs and ...
Apr 5, 2023
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5
Energy & Green Tech
That garbage truck you hear lurching through your neighborhood first thing in the morning? It runs on natural gas or diesel, dirtying the air with nitrogen oxides and contributing to carbon emissions that worsen climate change.
Apr 4, 2023
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3
Energy & Green Tech
Scaffolding and green pipes envelop a refinery in the port of Rotterdam where Finnish giant Neste is preparing to significantly boost production of sustainable aviation fuel.
Apr 2, 2023
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42
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
