With a U.S. appeals court set to hear oral arguments Tuesday on the Clean Power Plan, Progress Illinois looks at the debate over the landmark climate change regulations and the potential outcomes of the case.
A leading environmental group wants swift federal action on leaded aviation fuel used by small airplanes and some helicopters.
Friends of the Earth released a new report on the issue, noting that leaded aviation fuel, or "avgas," accounts for 50 percent of all airborne lead emissions.
Lead is a highly toxic metal known to adversely affect neurological development.
"While lead has been banned or limited in consumer products, building materials and automotive gasoline, no action to date has been taken to address the largest source of lead emissions into the air -- leaded aviation fuel," reads the Friends of the Earth's report, prepared by the Center for Environmental Health.