The Story of a Glass of Water

How science and nature combine to purify water in a reservoir. Micro-cinematography shows the bacteria present in the water. How science and nature combine to purify water in a reservoir. Micro-cinematography shows the bacteria present in the water. How science and nature combine to purify water in a reservoir. Micro-cinematography shows the bacteria present in the water. How science and nature combine to purify water in a reservoir. Micro-cinematography shows the bacteria present in the water.