Wildfire smoke or ozone pollution can cause air quality to drop due to all the particles in the air. The Pennsylvania Department of Environmental Protection issues air quality alerts when the air ...

Air quality alerts use color-coded categories to show when pollution levels may be unhealthy. Code Orange is unhealthy for sensitive groups, while Code Red is unhealthy for everyone. Code Purple means ...

There are quite a few four-cylinder engines, made for today's high-performance vehicles, that can produce either the same or more power than the V6 engines that have been in use up to this point. We ...