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The city of Los Angeles in the state of California has not had any substantial rain for a long time, which is hurting crops and other living conditions, so the city decided to get creative. 

Over the last few months, they’ve decided to release 96 million “shade balls” into one of the most important reservoirs in the area. Shade Balls are actually black plastic balls that float on the surface of the water and deflect UV rays and help keeping bad chemical reactions to a minimum. They also help break up algae that forms on the surface of the water. 

“By deflecting UV rays, the opaque spheres are expected to protect more than 300 million gallons of water from evaporating in Southern California’s harsh sunlight every year. “How’s that for amazing?

Why do you think they chose black instead of another color? Your guess is as good as mine, but I bet cost had something to do with it. Each ball costs 36 cents a piece (US Dollars). 

Can you figure out how much the entire project cost?

(via Millions Of ‘Shade Balls’ Protect LA’s Water During Drought)