The U.S. Supreme Court ruled in favor of Indiana and 18 other states in a case to limit how the federal government can reduce greenhouse gas emissions.

The air quality may become unhealthy for sensitive individuals, especially active children, the elderly, and anyone with asthma, lung disease, COVID-19, or other serious health problems.

This means children, seniors, and anyone with a heart or lung condition should avoid strenuous work or outside exercise.

Residents near a waste oil recycling company in Indianapolis have long complained of odor and other air pollution issues. Metalworking Lubricants Co. has had repeated water violations too.

Transportation is the largest source of the U.S. emissions that contribute to climate change -- and passenger cars and trucks make up more than half of those emissions.

The Hoosier chapter of the Sierra Club and three other environmental groups have reached a settlement with BP for emitting too much particle pollution at its Whiting Refinery in northwest Indiana.

The U.S. Environmental Protection Agency said long-term exposure to ethylene oxide increases your risk for cancers of the white blood cells like non-Hodgkin lymphoma, myeloma, and lymphocytic leukemia (chronic or acute). It can also increase the risk for breast cancer in women.

Smoke from wildfires in the western United States and southern Canada, along with local weather conditions, have created the potential for unhealthy levels of fine airborne particles in every region of the state.

The city plans to start monitoring air emissions at the wastewater treatment plant before the Waelz Sustainable Products facility begins operating.

The Sierra Club has won a lawsuit against BP for pollution violations at its Whiting refinery in northwest Indiana. The plant exceeded its limits for particle pollution from 2015 to 2018 and also failed to do required follow-up tests.