An influx of pollution from Asia in the western United States and more frequent heat waves in the eastern U.S. are responsible for the persistence of smog in these regions over the past quarter century despite laws curtailing the emission of smog - forming chemicals from tailpipes and factories. (sciencedaily.com)
A look at some of the claims in a Rose Garden speech and an accompanying fact sheet about the deal to curtail emissions responsible for global warming: (fortune.com)
A smaller engine would help to broaden the appeal of the Corvette internationally, while simultaneously curtailing both emissions and fuel consumption. (automobilemag.com)