Epaphos who was rumored to be Zeus's son lost his temper with Phaethon because he did not believe that he was Zeus's son and he said that Phaethon was swelled up with false ideas about his father.
Phaethon goes to his mother Clymene and asks her if he is Apollo's son who is the god of music, poetry, art, oracles, archery, plague, medicine, sun, light and knowledge. Clymene says you should go to Apollo and ask him yourself. So that's just what Phaethon did.
Phaethon wants to to ride Apollo's chariot but Apollo won't let him because only Apollo can control it. Apollo is resistant but Phaethon won't let up. So eventually Apollo gives in.
So Phaethon climbs up to the chariot and gets on. They let the gates down. And the horses set off on their normal path but the horses felt that they had no master so they shot straight up into the sky then right back down burning the earth.
Phaethon, son of Apollo instructs on human proper behavior and it explains some natural occurrence. For example, this myth explains human proper behavior by how Phaethon shouldn't have to prove to other people that he's the son of Apollo, it doesn't matter what other people think of you. This myth also explains some natural occurrence by how when Phaethon was riding in the chariot in the sky. Meadows and corn fields were reduced to white ashes and they were shriveled and smoked. Cities were flaming. The Great North African Plain was scorched until it became the desert that it is today. Mother Nature was in utter destruction.