ELI5: Explain Like I'm 5

Nitrogen trioxide

Okay kiddo, you know how air is made up of different gases like oxygen and nitrogen? Well, nitrogen trioxide is a gas that is made up of nitrogen and oxygen too!

But wait, what's the difference between nitrogen trioxide and regular air? Well, nitrogen trioxide is a tiny bit heavier than air and it also has a reddish-brown color.

Now, you might be wondering why we even care about this gas. Well, nitrogen trioxide is actually a pollutant that can harm the environment and make it harder for us to breathe.

Sometimes, cars and factories produce nitrogen trioxide as a byproduct of the fuels they use. That's why it's important to try and reduce the amount of pollution we create by using cleaner energy sources or driving less.

So, in summary, nitrogen trioxide is a gas made up of nitrogen and oxygen that can harm the environment when produced as a byproduct of fuel. We need to be careful about how much of it we create to keep our air clean and healthy.