"Under pressure to devise a fix for its polluting diesel cars, the chief executive of Volkswagen, Matthias Müller, met for the first time with a senior government official in the United States to discuss the crisis that has engulfed the German carmaker since September."

"The California Air Resources Board said on Tuesday it rejected Volkswagen AG's (VOWG_p.DE) plan to fix 2.0 liter diesel cars equipped with software that allows them to emit up to 40 times legally allowable pollution."

"Alex Hummell says few dentists seem worried enough about invisible, odorless mercury to take the kinds of precautions needed to prevent everyday exposures."

"Gov. Jerry Brown on Wednesday ordered new regulations, including stepped-up inspections and safety measures, for all natural gas storage facilities in California in response to the continuing leak that has displaced thousands of people in the Porter Ranch neighborhood of Los Angeles."

"Manitoba resident Raven Thundersky, 50, spent her life fighting for justice for people suffering from illnesses caused by asbestos."

"A coalition of green groups has filed a lawsuit against the Environmental Protection Agency’s (EPA) new smog rules."

"The Indonesian government announced Monday it had acted against 23 companies that, officials said, were involved in burning forest and peatland in the country."

"The European Parliament has decided to set up a 45-member inquiry committee to investigate breaches of EU rules on car emission tests and alleged failures by EU member states and the European Commission to enforce EU standards."

"Worsening air conditions in China have lead to heightened public frustrations with pollution, causing the government to confront companies believed to be lying about their emissions data."

"A U.S. appeals court said on Tuesday Obama administration regulations limiting emissions of mercury and other toxic pollutants can remain in effect while the government revises the rules in response to a recent Supreme Court ruling."