Carbon Emissions

California has 7 of the 20 cities with the poorest air quality, according to a list complied by Forbes. Bakersfield, which has 60 days of unhealthy air a year, takes the top spot for its hot and dusty weather and proximity to oil fields.

Last week, Boulder, Colorado voters approved the idea of firing their power company in favor of generating their own.

The Manchester Ship Canal has gone underused for shipping goods for decades, but is now having a resurgence with the realization that barge freight can greatly reduce carbon emissions.

Alex Steffen presents the idea that by focusing development into "hyperdense" communities you create a host of benefits that reduce climate change by reducing trips.

Australia's first term prime minister Julia Gillard announced a carbon tax that will charge $23 per metric ton. Though Australia is one of the world's top carbon polluters, the program will start next year, reports Sarah Laskow, GOOD Magazine.

The new "Eco-Drive Index" offers a mode of comparing the average monthly environmental impact by an individual U.S. driver who has purchased a new vehicle that month.

A new proposal in front of the European Commission would put speed limits on the autobahn to reduce carbon emissions, and ban gasoline and diesel powered vehicles by the year 2050.

Ever since David Owen's book Green Metropolis pushed forward the idea that cities are better for the planet, people have been debating if it's really so. New evidence says yes.

Hybrid technology for marine transportation is a growing industry, as startup business in New Brunswick, Canada attests.

Beyond the fact that supplying lots of parking encourages driving, a new study quantifies the environmental impact of parking lot construction.

Controlling carbon emissions hinges on encouraging cities that have small carbon footprints, writes Matthew E. Kahn.

The city Yokohama could be Japan's next exportable good. officials there want it to be a low-emissions "smart" city -- a model they hope to be able to convince other cities to replicate.

Is New York City's green transportation revolution overhyped? It turns out that emissions from private cars actually increased between 2007 and 2009, and that almost none of the city's greenhouse gas reductions came from the transportation sector.

A neighborhood in Corvallis, Oregon, is the pilot site of a neighborhood-wide "carbon challenge" in which residents try to reduce their carbon footprint.

British officials are looking to help their efforts to curb carbon emissions by capping growth on airport runways that they say encourage "binge flying".

Rem Koolhaas and his practice have released a vision of Europe 50 years from now, connected by an extensive smart grid and utilizing solar, wind and other green technologies to power the continent.

In the most significant decrease since 1949, carbon emissions in the U.S. fell 7% in 2009. Sadly, part of the falloff is the result of the economic crisis.

Normally fuel economy standards are set by the National Highway Traffic Safety Administration. Due to the 2007 Supreme Court ruling on the Clean Air Act, the new rules are jointly issued by the EPA to regulate tailpipe emissions as well as CAFE.

New research suggests that huge domes of carbon dioxide hover over urban areas, which is prompting some scientists and policymakers to stress the importance of cities as the frontlines of the war on greenhouse gas emissions.

California republicans are arguing that the state's environmental laws are hurting the economy. This editorial from the Los Angeles Times questions the wisdom of that argument and wonders what negative impacts would come from lifting CEQA.