National Geographic posted an article about a new invention used in L.A. called ‘Shade Balls’, which are4-inch plastic balls that lay on top of water to shade and cool it, reducing evaporation 85-90%. They also help to keep bacteria and algae growth down.
In Los Angeles’ largest reservoir of water, which holds 3.3 billion gallons of water, there lies 96 million shade balls. The Los Angeles Department of Water and Power hopes that this will be a great solution for the severe drought conditions in California.
See photos and read more here.