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Study on Greenhouse Gas Emissions from Global Cities Highlights Importance of Geophysical and Technical Factors

Green Car Congress

SEPTEMBER 7, 2009

Within the overall trends there are differences between cities with more or less public transit; while personal income also impacts heating and industrial fuel use. The metabolism of a city can be interpreted either primarily in terms of energy flows or more broadly including a city’s flows of water, materials, and nutrients.

Emissions 199
Emissions Global Gas Los Angeles 199
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The New Supersonic Boom

Cars That Think

AUGUST 16, 2021

Piloting the bullet-shaped Bell X-1 rocket plane in 1947, Chuck Yeager became the first person to exceed the speed of sound while in horizontal flight. The main obstacles will be regulatory and, especially, environmental: Supersonic airliners could be hugely more polluting than their subsonic counterparts. Everett Collection/Alamy.

Oklahoma City 108
Oklahoma City Ozone Oklahoma Fuel 108
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