The sun began its descent as the afternoon soon drew to evening. The heat lessened, making it cooler for some animals to come out. This of course made the area more dangerous as the night hunters came out at night.
Meanwhile, Max, who slept up on a tree the whole afternoon, had decided it was cool enough to move out into the plain, bare sands of the orange desert. After Carl's freak accident over one thousand years ago, the Earth's biomes varied greatly and became even harsher as mother nature "mutated" into a tougher, unforgiving powerful force.
As a result, some parts of the world were bitterly cold with temperatures going below negative one hundred while some places became nearly as hot as the planet closest to the sun. Humanity had no choice but to build their settlements in the green zones, areas that were marked off as safe and habitable.