Okay kiddo, so imagine you have a bunch of Legos. You can use these Legos to build different shapes and structures, right?

Well, scientists use special molecules called metal oxides to build structures called metal-organic frameworks (or MOFs for short). It's like building with Legos, but instead of plastic, they use metal oxides.

These structures have tiny little spaces in between the metal oxide "blocks" where other molecules can fit. This makes MOFs really useful for storing things like gases or removing pollutants from the air.

Think of it like building a special house with spaces that only certain things can fit into. It's a cool way to make materials that can be useful in lots of different ways!