March 6, 2017, 1pm PST
Los Angeles seems primed for a development boom, but when developments are built near highways there can be serious health consequences.
February 23, 2017, 10am PST
Some evidence suggests that apartments lead to more greenhouse gas emissions per capita than houses. Does this mean that suburbs pollute less than cities? Probably not.
February 21, 2017, 1pm PST
Schools tend to get built on cheap land. Cheap land is often found near busy roadways—sources of pollutants that are harmful to the health of children.
The Center for Public Integrity
February 20, 2017, 7am PST
A new study from the University of Surrey produced counterintuitive results about the relative pollution levels of commuters around London.
February 6, 2017, 1pm PST
Beijing promises "extraordinary" measures to reduce pollution in the infamously smoggy city.
January 24, 2017, 12pm PST
We all know that pollution, like tobacco, kills! We also know that diesel fuel is extremely dirty. Unfortunately, until a few years ago, the automobile industry had deceived us into believing that diesel was as clean or cleaner than gasoline.
January 18, 2017, 1pm PST
Those who live in Bloomington, east of L.A., face factories on all sides and a high incidence of asthma. Some feel polluters should be made to 'clean up their messes' with punishments rather than government funds.
January 12, 2017, 6am PST
Paris Mayor Anne Hildalgo announced a new plan to further restrict cars and trucks from the city center.
January 6, 2017, 5am PST
The capital of Catalunya is suffering from persistent high pollution due to car density and the largest number of motorcycles in Europe. City administrators, aware of the situation, have been unwilling to take any action that would upset drivers.
December 27, 2016, 12pm PST
It's not Southern California, with its ports and congested freeways, California's Central Valley, with its bowl-like topography, Houston, with its oil refineries, or the midwest, with its coal power plants. Hint: think Santa Claus.
December 9, 2016, 6am PST
A weather inversion has caused the highest air pollution in the French capital in ten years. To coax commuters from their cars, free transit and odd-even license plate driving restrictions were enacted by Mayor Anne Hidalgo on Tuesday
December 7, 2016, 11am PST
Mexico City, Paris, Madrid, and Athens will ban diesel cars and vans by 2025.
November 18, 2016, 7am PST
As mayor of Tirana, Albania, Erion Veliaj has introduced alternatives modes of transport to the city’s traffic-clogged streets and made the public a full partner in the process.
November 17, 2016, 12pm PST
A new report from the Nature Conservancy provides evidence of trees as a crucial component of public-health infrastructure.
November 8, 2016, 12pm PST
We talked to Barcelona's mobility guru, Mercedes Vidal, about how the high pollution levels that are pushing the city to rethink heavy traffic flows, provide faster more efficient public transport and hike up parking fees.
October 13, 2016, 5am PDT
London Mayor, Sidiq Kahn, authorizes two new bridges and a tunnel in eastern part of the city.
October 6, 2016, 10am PDT
A controversial biomass amendment added to the Senate's energy bill would make the burning of wood for energy purposes a renewable source of energy. While the proposal has broad, bipartisan Congressional support, many groups oppose it.
September 27, 2016, 11am PDT
Two weeks ago, after nearly two decades of waiting, Barcelona urban designer Salvador Rueda finally saw the first "Superilla" (Superblock) installed in the city. The superblock faced fierce opposition from unhappy residents and local businesses.
August 27, 2016, 11am PDT
With a 32 percent increase in natural gas drilling in the Marcellus Shale in Pennsylvania, it is no surprise that emissions are increasing as well, particularly sulfur dioxide. However, the increase was dwarfed by decreases from the power sector.
July 20, 2016, 8am PDT
Forty so-called Tier 4 locomotives, a U.S. Environmental Protection Agency designation requiring a dramatic reduction in particulate and nitrogen oxide emissions, will be joining Metrolink's fleet covering 512 track miles in six counties.