A Philadelphia refinery’s plans to expand operations is drawing opposition from local residents, clergy members and environmental activists who say it will emit toxic emissions and endanger the health of people living nearby.

The American Public Health Association (APHA) is endorsing the EPA rule that would strengthen national air quality standards for ozone pollution. Today’s proposal would lower the standard for ground-level ozone, or smog, to 70 parts per billion.

A 43-year-old high-school custodian started having breathing problems he associated with using a bathroom disinfectant and a floor stripper. When he was away from the chemicals for a few months, his breathing problems improved.

The American Petroleum Institute (API) is using a major new television, radio, print, and online advertising campaign to urge the Obama administration to keep the current ozone standards rather than implementing new ones.

Asthma is a major public health issue, affecting nearly 23 million people and disproportionally affecting low-income and minority communities. The economic impact of asthma amounts to more than $56 billion per year from direct medical costs and indirect costs, such as missed school and work days.

A 20-year study finds that millennial children in Southern California breathe easier than ones who came of age in the ‘90s, for a reason as clear as the air in Los Angeles today.