Veritasium

Why Are 96,000,000 Black Balls on This Reservoir? (2019x13)

Exibido em:: Mai 10, 2019

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.