Energy & Green Tech
Homes of the future could have cleaner air and lower energy bills due to a Purdue team's BioWall innovation involving the use of a living wall of air-cleaning plants.
Mar 23, 2017
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Hi Tech & Innovation
Drones, personal flying vehicles and air taxis may be part of our everyday life in the very near future. Drones and air taxis will create new means of mobility and transport routes. Drones will be used for surveillance, delivery ...
Jul 7, 2020
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Robotics
A team of researchers at the U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base, has developed a type of soft robot that can generate signals without using electricity. In their paper published in Proceedings ...
Engineering
The Korea Institute of Energy Research (KIER) has developed, for the first time in the country, a refrigeration technology that uses air as a refrigerant instead of Freon gas, hydrofluorocarbons (HFCs), and other refrigerants ...
Aug 27, 2024
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Energy & Green Tech
The global airline industry is fast recovering from the unprecedented pause to flying imposed by COVID-19. In some parts of the world, such as the Middle East, airlines are even expanding rapidly—well beyond pre-pandemic ...
May 17, 2023
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Energy & Green Tech
About 40 percent of all the energy consumed by buildings worldwide is used for space heating and cooling. With the warming climate as well as growing populations and rising standards of living—especially in hot, humid regions ...
Jul 12, 2018
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Energy & Green Tech
Coal-fired power plants in Korea are one of the main sources of air pollutants, CO2 and the other precursor materials to ultra-fine dust particulates such as nitrogen oxide and sulfur oxide. Therefore, FEPCRC is developing ...
Apr 17, 2020
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Consumer & Gadgets
A motorcycle helmet that filters out harmful emissions from the air is protecting riders in New Delhi and other Indian cities that rank among the most polluted in the world.
Aug 26, 2022
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Engineering
According to the WHO, about 7 million people die each year due to air pollution. Particulate matter (PM) triggers inflammatory responses in the human body, causing asthma and other respiratory and cardiovascular diseases. ...
Aug 26, 2021
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Engineering
The UK's rail service has been hit with widespread train delays and high levels of cancelations during the heatwave. The whole of the east coast line between Edinburgh and London was closed for hours on July 20 because of ...
Jul 22, 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
