“Compounding”

There have been five distinct ice ages over the very long history of the planet. Each turned the earth into a giant snowball. For as long as humans studied these phenomenon, the tilt of the earth’s axis away from the sun was thought to be the cause. Cool summers meant the winter snow didn’t melt. When the snow didn’t melt it reflected more heat away from the earth, cooling the planet further, and leading to more snow the next winter. And when there was more winter snow