Why Are 96,000,000 Black Balls on This Reservoir?

I took a boat through 96 million black plastic balls on the Los Angeles reservoir to find out why they're there. The first time I heard about shade balls the claim was they reduce evaporation. But it turns out this isn't the reason they were introduced.

• #تحصیلات_و_یادگیری
• #veritasium
• #black_balls
• #balls
• #ball_pit
• #shade