Black Shade Balls

An interesting video that explains why there are 96,000,000 Black Balls floating in the Los Angeles reservoir.

Until I watched this video I could only guess why someone would want to cover a reservoir with millions of black shade balls. The balls are also known as bird balls because their original purpose was to keep birds off of water near airports. It seems like this is a cost-effective and safe solution to preventing carcinogenic bromate from occurring. 

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