The standards of the 1970s were a step forward, but only a modest one. The EPA reports that transportation accounted for 28% ...

Emission control systems in modern cars have slashed air pollutants such as particulate matter and nitrogen oxides. But these systems face two major challenges: carmakers cheating on pollution tests ...

Maintaining good air quality inside a car involves balancing the filtration of outside pollutants with the prevention of interior CO2 buildup. While a car’s cabin air filter is the primary defence, it ...

A surprising incident from Rajasthan’s Nagaur has gone viral after a traffic police officer issued a pollution challan to an ...

Cars on the road today are 99% cleaner than they were in 1970. Air quality in the United States is much, much better as a ...

Studebaker car with a Wisconsin front license plate by RAUL RODRIGUEZ via iStock for WMNF. Ann E. Carlson, University of California, Los Angeles Cars on the road today are 99% cleaner than they were ...

For years the Environmental Protection Agency has pushed carmakers to reduce how much vehicles contribute to climate change. Today the EPA laid out plans to not just weaken those rules, but end them ...

Add Yahoo as a preferred source to see more of our stories on Google. Before catalytic converters, starting a gas-powered vehicle could choke the surrounding area with smog. Bettmann via Getty Images ...