In California, for instance, CO2 accounts for a much bigger share of total greenhouse gas (GHG) emissions (76%) than the global average (56%).

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New York City could cut greenhouse gas (GHG) emissions by 90% by 2050 by implementing a portfolio of energy reduction measures using existing technologies, according to a report released last week by the Urban Green Council.

FORBES: Rethinking Our Response to Climate Change: Carbon Wedges 2.0

An executive order signed by Gov. Arnold Schwarzenegger (R) in June 2005 established short- and long-term greenhouse gas (GHG) emission reduce targets for California: to reduce GHG emissions to 1990 levels by 2020 and 80% below 1990 levels by 2050.

FORBES: How Will California Slash Greenhouse Gas Emissions 80% By 2050?

Last week, the EPA published its GHG Emissions Report, assessing the sources and volumes of greenhouse gas emissions in the U.S. for calendar year 2010.

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