The EPA chose to reduce the current standard of 75 parts per billion, unchanged since 2008, by 5 ppb. Public health and environmental groups insist that a safe standard would be 60 ppb, while businesses point to the high costs to comply with 70 ppb.
Oct 2, 2015 The Wall Street Journal
While pollution from vehicle exhausts has been known for some time to exacerbate the symptoms of asthma, a new study published in the European Respiratory Journal establishes for the first time the direct causal link between the two.
Mar 26, 2013 Discovery News
A new report released last week documents the energy use of New York's largest buildings for the first time ever. It's the first step in tackling the source of two-thirds of the city's greenhouse gas emissions.
Aug 8, 2012 The New York Times
While California's high speed rail project will be beneficial for the environment by turning polluting car and plane trips into zero-emission travel by train, there are formidable environmental challenges it must overcome in the construction phase.
Jun 16, 2012 Los Angeles Times
The city’s MillionTrees program fights asthma and global warming. But tightening maintenance budgets, increasingly severe weather and decades-old planting decisions complicate trees’ contribution.
Feb 1, 2012 City Limits
Arlington, TX Mayor Robert Chuck is also a physician, acutely aware of the effects of ozone air pollution in his city. In this Q & A with Grist's Jonathan Hiskes, he describes ozone's causes and effects and his role as mayor.
Jul 4, 2010 Daily Grist