Energy & Green Tech
A coalition of Georgia business, academic and political leaders is pitching Georgia to the federal government as a potential hub for the development of hydrogen as a viable energy source.
Jun 9, 2022
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Energy & Green Tech
Air pollution is responsible for millions of deaths every year, worldwide. According to a State of Global Air report, air pollution is the fifth greatest global mortality risk.
Energy & Green Tech
Researchers at the University of Tokyo have generated electricity from latent heat, the energy created when a substance transitions from a solid, liquid or gas into another state. This achievement could push forward the possibilities ...
Jul 18, 2023
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Business
Airlines may not be replacing pilots with artificial intelligence anytime soon, but aviation industry experts say the new technology is already revolutionizing the way they do business.
Jun 3, 2024
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Energy & Green Tech
California likely will have an energy shortfall equivalent to what it takes to power about 1.3 million homes when use is at its peak during the hot and dry summer months, state officials said Friday.
May 7, 2022
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Business
Latin America's beleaguered airlines will take up to three years to recover losses due to the coronavirus pandemic, and in the meantime desperately need government help, according to experts surveying the damage to the industry.
May 31, 2020
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Engineering
A group of scientists have discovered a new application to generate and store chilled water to reduce the impact of air conditioning on the environment, reduce energy consumption, and lower dependence on fossil fuels.
Dec 12, 2023
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Energy & Green Tech
They were long derided as old-fashioned symbols of grinding poverty, but mud and straw houses are making a comeback in Hungary as a low-cost, eco-friendly alternative to concrete.
Feb 16, 2023
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Engineering
When the air harbors harmful matter, such as a virus or toxic chemical, it's not always easy to promptly detect this danger. Whether spread maliciously or accidentally, how fast and how far could hazardous plumes travel through ...
Feb 18, 2022
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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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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
