They release millions of small black balls into the lake every year. The reason completely surprised us…

Grad Los Angeles has found a brilliant and very simple way to combat the drought that hits California every year.

City officials came up with the idea to dump millions of small, hollow polyethylene balls into the city reservoirs that hold water for residents. This is done to slow down the evaporation of water from the reservoirs.

The cost of one ball is $0.36, making it a much cheaper and more efficient way to save water and fight against drought.

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