Energy & Green Tech
Zinc-air batteries have emerged as a better alternative to lithium in a recent Edith Cowan University (ECU) study into the advancement of sustainable battery systems.
Aug 18, 2023
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Engineering
Indoor air pollution may have met its match. Today, scientists will report that they have designed catalyst-coated lampshades that transform indoor air pollutants into harmless compounds. The lampshades work with halogen ...
Aug 16, 2023
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Engineering
The ocean isn't just impacted by climate change—it may also be part of the solution to reversing it.
Jul 24, 2023
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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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Energy & Green Tech
Researchers at the Paul Scherrer Institute PSI and ETH Zurich have performed calculations to work out how air traffic could become climate-neutral by 2050. They conclude that simply replacing fossil aviation fuel with sustainable ...
Jul 6, 2023
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Telecom
Airline passengers who have endured tens of thousands of weather-related flight delays this week got a welcome respite from the headaches Saturday, despite concerns about possible disruptions caused by new wireless 5G systems ...
Jul 1, 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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Engineering
Most people know air pollution exists outside from cars, trucks and industry, but many are unaware their indoor air quality could be worse than that of a big city.
Mar 23, 2023
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Energy & Green Tech
A team of environmental engineers at Lehigh University working with a colleague from Georgia Tech Shenzhen Institute has developed a direct air capture (DAC) device for removing CO2 from the air. The results are published ...
Energy & Green Tech
With its high-carbon footprint, air travel challenges the goal set by many countries of stabilizing global mean temperature by the middle of the 21st century. The aviation sector could achieve net-zero carbon emissions by ...
Feb 7, 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
