The heatwave that brought 100-degree temperatures to the Philadelphia region in June also brought warnings that the air quality was unhealthy for sensitive groups. This was not a coincidence.

Phasing out vehicles based on age is not enough. It is important to improve their fuel and emission standards; Plan lacks ...

Los Angeles and much of Southern California were met with a regional air quality alert on Saturday, following July 4th festivities.

The American dream is slipping away. Most US citizens no longer enjoy “a minimal quality of life” due to skyrocketing costs, ...