Air might seem invisible, but there’s a lot going on in it. The air around us is a mix of different gases that work together to support life—but when pollution enters the picture, that balance gets thrown off. Things like car exhaust, industrial emissions, and even everyday activities can change the quality of the air we breathe.

The cool part? You can actually explore this yourself. This science project walks you through how to observe and better understand air quality in your own environment—helping you see firsthand how clean (or polluted) your air really is.

Try it out here: https://www.energy.gov/etec/articles/science-corner-how-clean-air-around-us