CarbonDioxide

Britain's Automobile Association has found another bump in the road to environmental kindness: speed bumps and really low speed limits. They took a car that got 58-mpg running a constant 30-MPH, and ran it over speedbumps at the Millbrook Proving Ground, slowing down and speeding up for each bump. ...

EPA standards govern vehicle emissions such as NOx and hydrocarbons. They are byproducts of combustion that can be balanced with engine tuning, such as ignition timing and fuel delivery. They can also be reduced through devices such as catalytic converters. Catalytic converters cause a chemical ...

Automakers and legislators in Europe are tightening the screws on CO2 emissions, and Porsche may turn to hybrid powertrains for the Cayenne and Panamera to meet a proposed 130 gram per kilometer limit. Bosch and Audi are reported partners in the effort to bring a gasoline/electric system to the ...

Admittedly, we're a little late to the party on this one, but thankfully, our greener sibling site was on top of things when the Supreme Court made an important ruling yesterday regarding the Environmental Protection Agency's enforcement of the Clean Air Act.The ruling revolves around the ...