Illinois boasts a diverse environment, transitioning from the Great Lakes ecosystem in the north to rolling hills and forests in the south.
* **Protected Areas:** The state maintains over 100 state parks, including the popular **Starved Rock State Park** (known for its sandstone canyons and waterfalls). The **Shawnee National Forest** spans southern Illinois, offering rugged terrain and the famous Garden of the Gods. * **Water Quality:** Lake Michigan is a vital freshwater resource, heavily monitored for water quality. The state's extensive river network (including the Mississippi, Illinois, and Ohio rivers) requires ongoing conservation to manage agricultural runoff. * **Air Quality:** Generally good statewide, though the Chicago metropolitan area occasionally experiences "Ozone Action Days" during hot summer months due to vehicle emissions and industrial activity. * **Sustainability:** Illinois has committed to green energy transitions, notably through the Climate and Equitable Jobs Act (CEJA), which aims for 100% clean energy by 2050. Wind power is a major contributor to the state grid, and solar adoption is rapidly increasing.
