June 16, 2012, 9am PDT
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.
October 24, 2010, 9am PDT
In a unanimous vote on Oct. 21, the San Joaquin Valley Air Pollution Control District approved another 'first' air quality measure not done elsewhere: They supported charging Valley motorists for paying the $29 million ozone penalty set by the E.P.A.
December 30, 2009, 5am PST
Air pollution rules recently passed in California seek to change the way workers get to their jobs. While solo commuters won't be forced out of their cars, businesses must choose from a selection of strategies aimed to do just that.