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

Green Car Congress

An international study of 10 global cities found that a balance of geophysical factors (climate, access to resources, and gateway status) and technical factors (power generation, urban design, and waste processing) determine the greenhouse gas emissions (GHGs) attributable to cities. t e CO 2 /cap. t e CO 2 /cap.) and Toronto (11.6

Emissions 199
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The New Supersonic Boom

Cars That Think

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.

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Summer Update

Plug In Partners

They join Founding Members from these cities: Arlington, TX, Baltimore, Boulder, Dallas, Denver, Fort Worth, Irvine, CA, Los Angeles, Memphis, Philadelphia, Seattle, San Francisco, and Wenatchee, WA. The list of supporters/partners now includes links to the members’ web sites along with a contact person. Keene, N.H., Santa Barbara, CA.,