B

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

Share
Embed
  • Loading...
  • Published on:  Friday, May 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.

    Huge thanks to LADWP for arranging this special tour for me. Next time let's put the GoPro on the submersible!

    The balls are made of high density polyethylene (HDPE) which is less dense than water so they float on the surface of the reservoir even if they break apart. They are 10cm (4 inches) in diameter and contain about 210ml of water. So the main reason they are on the reservoir is to block sunlight from entering the water and triggering a chemical reaction that turns harmless bromide into carcinogenic bromate. This effect occurs with prolonged exposure to bromate so regulators insist that levels be kept below 10 microgram per liter on average over a 12 month period.

    Special thanks to Patreon supporters:
    Donal Botkin, Michael Krugman, Ron Neal, Stan Presolski, Terrance Shepherd, Penward Rhyme and everyone who provided feedback on an early draft of this video.

    Thanks to:
    Las Virgenes Reservoir for footage of initial shade ball dump
    Euro-Matic for bird into jet-engine footage

    Researched and Produced by Casey Rentz

    Animations by Maria Raykova

    Music from http://epidemicsound.com "Colorful Animation 4" "Seaweed"

    And from Kevin MacLeod "Marty Gots a Plan"

    This is an educational video about the science of water quality.
  • Source: https://youtu.be/uxPdPpi5W4o
Loading...

Comment

  • David Beruashvili

    David Beruashvili

     2 hours ago

    someone made a lot of money with his balls :D

  • KingCarrot Cake

    KingCarrot Cake

     12 hours ago

    Veritasium:Why are they black???
    Me:*HMMMMMMMMMMMMMMMMM*🤔🤔🤔🤔

  • Yveltr

    Yveltr

     13 hours ago

    5:52 my pencil when I put it in the sharpener

  • the King of Cheddar Cheese

    the King of Cheddar Cheese

     14 hours ago

    5:51 am I the only one that almost punch the device when the bird went into the jet engine

  • MobileMusic

    MobileMusic

     15 hours ago

    5:50 a bird gets into the aircraft turbine and gets out probably dead!

  • Patrik VV.

    Patrik VV.

     19 hours ago

    What happens after 10 years?

  • Fredrickson the 96th

    Fredrickson the 96th

     20 hours ago

    5:51
    Jesus Christ... that poor bird!

  • EXILE MEDIA

    EXILE MEDIA

     yesterday

    I didn’t know nature can loiter in nature lol.. I guess my human a$ is loitering in my house watching this... 🤔

  • Felhek Lehrian

    Felhek Lehrian

     yesterday

    23k dislikes

  • Hot Cheetos

    Hot Cheetos

     yesterday +4

    The Reservoir: "You can eat shadeballs"

    Eating Challenge Youtubers: Are you challenging me?

  • D4RK-Th3 B0T B0t

    D4RK-Th3 B0T B0t

     yesterday

    I read this in a magazine after a class test

  • Keneth García

    Keneth García

     yesterday

    AQUÍ ESTA EL COMENTARIO EN ESPAÑOL QUE TANTO BUSCABAS XDD :)

  • Tahir Khan

    Tahir Khan

     yesterday

    Don't know y i am watching this video on 2am ? with a accounting book in one hand and mobile in other.

  • よーでるよーでる

    よーでるよーでる

     2 days ago

    unbalance water?

  • Xrobo12

    Xrobo12

     2 days ago

    5:52 poor bird

  • Ms. Lazy

    Ms. Lazy

     2 days ago

    Was it just me or did someone see that bird in 5:53 get sucked into the plane thing 😪😂

  • Rook_Gacha *

    Rook_Gacha *

     2 days ago

    What is a shade ball-

  • Ilias 12

    Ilias 12

     3 days ago

    Is this plastic!!

  • Eddie_ swag

    Eddie_ swag

     3 days ago +1

    VSCO GIRLS: SKSKSKSKS I HOPE THERE IS NO TURTLES IN THERE AND I OOP SKSKSK SAVE THE TURTLES SKSKSK

  • Daniel Chiasson

    Daniel Chiasson

     3 days ago

    Bird going through the plane at 5:53