The Wump World

Mural reads: The Wump World by Bill Peet... was a peaceful place, until the Pollutians invaded. The Pollutians built a metropolis as the Wumps his underground. The air became so polluted that the Polutians had to leave... But the Wump World would never be the same.

The Wump World is a real children's book. It describes the world before, during, and after the invasion of unnatural being (Pollutians, who represent humans). The mural ends with the lasting impact of the pollution, which will also be the effect of humans' pollution as we are passing environmental tipping points that will be very hard to recover from.