A wizard, marble, and blanket

Once upon a time there was a wizned old wizard, a marble, and a blanket. This was before the Earth was born, but not too long. The planet on which the wizard currently resides is Neptune, and can barely sustain life. It is cold all the time, and there is barely enough food for the wizard to survive. He decides this must change. First, he wraps the blanket around the marble, which is a swirl of blue and green. Then, mustering tons of his strength, the wizard explandes it to the size of Earth. Next, he turns all the blue to water and the green to land. Slipping under the blanket he stepped onto the land of the marble. With a great heave, he pushed himslef, the marble, and the blanket away from Neptune. This would later be called the Big Bang. The marble would later be called Earth, and the blanket would be called the atmosphere. Throughout time, other humans arrived on Earth. The wizard, cursed to live forever, oversees all of this. However, his identity remained secret. As the wizard got older, he got colder and colder down on Earth. His solution: add more blankets. In doing so, Earth got warmer and warmer. For a long time, people didn't realize. Then, when they finally did, they called it climate change. To this very day, you and I are the only ones who know the true cause of Earth getting warmer.