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Devil In The Details: Is Copenhagens 2 ºC Guardrail Obsolete?

Green Car Congress

A maximum concentration of 450 ppm carbon dioxide (~550 ppm CO 2 equivalent) in the Earth’s atmosphere is commonly cited as the limit at which average temperatures can be held at 2 ºC, and many emissions reduction proposals are based upon these two “upper bounds” targets. ºF) above pre-industrial temperatures. Not the last two days.”.

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Electric Cars and a Smarter Grid - Green Inc. Blog - NYTimes.com

Tony Karrer Delicious EVdriven

The idea of self-sufficient cities is gaining currency in the European Union, which has set itself the ambitious task of cutting carbon dioxide (CO{-2}) emissions to one-fifth below 1990 levels by 2020 ? February 17, 2009 9:43 am Link No matter how you slice it we need a carbon TAX to accelerate all these important projects.

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