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

A gas station in the United States displaying gasoline and diesel prices - Michael Vi/Getty Images The Trump administration — on March 12, 2026 — filed a fresh lawsuit against California to prevent ...

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 ...

When California neighborhoods increased their number of zero-emissions vehicles (ZEV) between 2019 and 2023, they also experienced a reduction in air pollution. For every 200 vehicles added, nitrogen ...

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 result. In Los Angeles, where I live, lead levels in the air were 50 times ...