Automotive
The new head of the government's road safety agency says it will intensify efforts to understand the risks posed by automated vehicle technology so it can decide what regulations may be necessary to protect drivers, passengers ...
Jun 29, 2022
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Business
Air traffic is booming this summer, but after European vacations are over will passenger demand hold up?
Jun 26, 2022
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Consumer & Gadgets
Opening the windows at night and pulling down shades during the sunniest part of the afternoon can keep homes from becoming dangerously hot during extreme heat waves.
Jun 24, 2022
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Business
Global air transport is on course to return to profit after two pandemic-battered years but the war in Ukraine and the cost-of-living crisis lurk as threats, the industry's world body said on Monday.
Jun 20, 2022
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Automotive
There is a new sight on the streets of Havana: increasing numbers of electric vehicles whizzing among the old American cars so emblematic of the Cuban capital.
Jun 18, 2022
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21
Energy & Green Tech
If you're anything like me, you're increasingly working from home, one that was built before energy efficiency measures were introduced in Australia.
Jun 17, 2022
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Hi Tech & Innovation
Spain's Air Nostrum has become the first airline to reserve 100-seat helium airships that emit just one tenth of harmful emissions produced by jet planes, their British manufacturer said Wednesday.
Jun 15, 2022
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Other
Swiss airspace reopened Wednesday morning after a computer glitch grounded flights across the country for several hours, officials said.
Jun 15, 2022
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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
As millions of Americans hop on airplanes heading to favorite vacation spots, the industry is gearing for a bigger journey—one that will tackle removing the carbon emissions from those flights over the next 30 years.
Jun 9, 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
