Half the house (I assume everything in the image is the entire house) has children,
the other half is darker and leads to the outside with buildings and machines, with an adult staring in from the door-
My overall impression is that this is drawn from the perspective of the child(ren), where their worlds are still small and only within the confines of the place they grew in. They can't see much / do not know much of what is out there, thus the strange outdoors. The leaning tower of Pisa is straightened, probably by one of the children, to 'fix' it, maybe? - not knowing that the real thing actually is slanted. There are a lot of books, but they're being burnt, maybe because it's cold outside? The adult does nothing but stare. The children are left to their own devices and their own worlds, their clothes, symbolic of protection, maybe? Is blended in with their environment; that is all they have.
As for the adult and the adult's side, hair is symbolic of beauty. Aside from their hair, there is nothing green out there, and some plants are being transported (?) by a hot hair balloon. Adults have torn down the earth, it has frozen and flooded over, maybe symbolizing how the adults (the previous generation) stripped the earth for their own shallow gains (the hair). The window behind the adult shows a different landscape in entirely- probably showing what it truly looks like outside (it is the only window showing something realistic). But it's distant (from the children), and we can't really see, only guess what is in the silhouettes. The moon is a peculiar little detail, but I can't tell what it's supposed to mean. The adult is reduced to just a head, no hands, no body, no arms, they can't walk over and do anything to/with the children, only watch- since this might be seen from the children's perspective, it might mean how the children perceive their adult's presence (very, very absent).
TLDR; the neglect of the previous generation leaves the children with a planet that is slowly dying over. Children stay in their homes unknowing and not understanding the outer world circumstances, they are uneducated, despite the house being full of books (again, out of neglect / absence of actual supervision/guidance).