What is Atmospheric CO₂ levels?

Atmospheric CO₂ levels are how much carbon dioxide is floating around up high in the sky.

Imagine you're blowing bubbles into a big, invisible balloon, that's kind of what we’re doing with CO₂. Every time we drive cars, turn on lights, or burn wood for fires, we let out more CO₂, like extra breaths into the balloon.

Carbon dioxide is a gas made of carbon and oxygen. You can find it in soda bottles, that’s what makes them fizz! When you open a bottle, you hear that hiss sound, and some CO₂ escapes.

Think of the sky like a big sponge. It soaks up CO₂, but we've been adding more and more to it over time, like if you kept pouring water into a sponge until it's full and even dripping. That extra CO₂ helps keep Earth warm, just like how a blanket keeps you warm at night.

Sometimes people say the sky is getting "cozy" with too much CO₂, which means Earth might get warmer than usual, but that’s something we can learn to manage!