Sleep Tight Science - A Bedtime Science Show For Kids
Jun 17, 2026 · 27 min · 11 segments
In this episode we are going to try and find out what air actually is and why it counts as real matter — because it does, even though it behaves as if it has nothing to prove. Then we'll look at what…
Hello, friends.
Before we begin, there's a quick ad, and then we'll get right to the story You're listening to Sleep Tight Science [gentle music] Did you know that right now you are surrounded by something you cannot see, cannot smell, and probably haven't thought about once today? What? And your body has been depending on it every single second since the moment you were born? [gentle music] Hello, friends, and welcome back to Sleep Tight Science, a bedtime show that answers your questions about science.
You can feel air on your face.
You can hear it move through trees.
You can watch it push a flag sideways or carry a smell down a hallway before breakfast, and yet you cannot see it at all.
Why not? In this episode, we are going to try and find out.
We'll start with what air actually is and why it counts as real matter, because it does, even though it behaves as if it has nothing to prove.
Then we'll look at what your eyes actually need in order to see something and why air usually doesn't give them enough to work with, and then we'll go looking for clues because invisible things leave evidence if you know where to look.
Read the full transcript.
Create an account to read the whole episode, search across every transcript, and follow the shows you care about.