An odd happening during Friday’s rain showers in Evansville led to a few people calling for help. Evansville first responders were called to four homes that evening about people struggling to breathe in their homes as well as having a hard time lighting gas stoves and furnaces. Firefighters conducted air tests inside the homes and found low levels of oxygen and high CO2 levels. They suspect that acid rain from the rain showers reacted with limestone in the ground and released excess amounts of carbon dioxide. They are working with the DNR and CDC to learn more.