Solid Plastic Balls

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

Solid Plastic Balls

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. Huge thanks to LADWP for arranging this sp...

Tags: veritasium,black balls,balls,ball pit,shade,res...