Generation Carbon: It’s time to start. What happened inside the jar? The covered butter melted 昀椀rst, right? This is the same idea behind the greenhouse e昀昀ect. Just like the glass roof of a greenhouse keeps heat inside, the jar kept heat inside of your experiment. On our planet, greenhouse gases act like the jar. They trap the Sun’s heat. That’s why our Earth is getting warmer. And that’s why it’s so important that we race to help our planet. Ready? Set? Keep reading… 22 | Check out The Carbon Almanac to learn more.