Imagine you're walking in the snow, and your feet leave big prints behind. A carbon footprint is kind of like that, but instead of snow, it's the impact our activities have on the Earth's atmosphere.
When we use electricity, drive cars, or even throw away trash, it creates invisible gases that go up into the air. These are called greenhouse gases, and they trap heat around the Earth, like a giant blanket. Too much of this heat can cause problems like hotter weather and melting ice...
