Energy & Green Tech
The latest reports from the Intergovernmental Panel on Climate Change show that to avoid massive losses and damage from global warming, nations must act quickly to reduce their greenhouse gas emissions. The good news is that ...
Apr 11, 2022
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Energy & Green Tech
Zinc-air batteries, which produce electricity through a chemical reaction between oxygen in the atmosphere and zinc, are considered to be next-generation candidates to meet the explosive demand for electric vehicles instead ...
Apr 7, 2022
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Automotive
As of this writing, the national average fuel price is $4.24 per gallon, according to the American Automobile Association. Up 20% from a month ago, gas prices aren't likely to taper or deflate unless crude oil supply improves ...
Apr 6, 2022
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Business
Air travel in the United States improved Monday after a rocky weekend that left thousands of flyers stranded by thunderstorms in Florida, technology problems at the busiest domestic airline and labor problems at another carrier.
Apr 4, 2022
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Engineering
Researchers have assessed the natural ventilation flow rate through a sash window—a common feature in domestic buildings—to inform smart and low energy building design.
Apr 4, 2022
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Energy & Green Tech
To most people, a solar farm or a geothermal plant is simply a power producer. Scientists and engineers see far more potential.
Apr 4, 2022
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Automotive
The federal government's announcement of a halved fuel excise is no doubt music to many people's ears. Following Tuesday night's budget release, the excise (a government tax included in the purchase price of fuel) was halved ...
Apr 1, 2022
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Business
New Zealand's flagship airline on Wednesday announced a plan to raise $1.5 billion to hire more staff, buy new planes and expand its routes as it seeks to rebuild from deep losses caused by the coronavirus pandemic.
Mar 30, 2022
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Business
Major US carriers lifted their revenue forecasts Tuesday as a faster-than-expected travel recovery from the latest Covid-19 wave mitigates the drag from higher jet fuel costs.
Mar 15, 2022
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Business
Arajet, a new Caribbean airline, has ordered 20 of the Boeing 737 MAX aircraft and placed options for 15 additional planes, the aviation giant announced Monday.
Mar 14, 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
