So, Willy is ready to lead his troops into battle. Willy finds it incredibly strange that the Humans don’t do anything to return the attack. Of course, that doesn’t include them polluting the air and cutting down the trees that return oxygen to the air. Anyway, Willy has been bouncing around and bumping and fighting into fellow molecules. He has lost lots of energy and is ready to rest. But, when he rests, he will condense and become a liquid and prepare to precipitate. When he precipitates, he will return to the ground where he started. But for right now, he will sit on a dust molecule with his troops and become what the humans call a cloud. Thanks to a treaty with the dust and salt molecules, the water molecules have someplace to sit and wait until the air is too saturated to hold any more. At this moment, the water molecules are barely sliding past one another. That way they won’t gain energy and become water vapor. Suddenly, the molecules felt something strange…