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

  • čas přidán 10. 05. 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 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.

Komentáře • 60 721

  • GewoonSemXL
    GewoonSemXL Před 5 hodinami


  • David Miller
    David Miller Před 5 hodinami


  • Ni No
    Ni No Před 6 hodinami

    Wow seen this one 😍😍zee.gl/oT0mp09F

  • Alicja Szymańska
    Alicja Szymańska Před 6 hodinami +1

    How do they plan to replace them in 10 years? Remove all or some kind of slow replacing only those "damaged" by sun? How they are sure those ball after 10 years of hitting them with sun still will be as safe for food as new ones?

  • Clancy_Lay
    Clancy_Lay Před 8 hodinami

    Seems great for the environment

  • Roast Beef Pork
    Roast Beef Pork Před 8 hodinami

    Who else thought he was dressed up as Robbie rotten in the thumbnail?

  • Alltimegamehackz
    Alltimegamehackz Před 9 hodinami

    0:39 i ve seen more than 96 million, its 100 million and pewdiepie has 100 mill subs😃😃

  • KING Bez
    KING Bez Před 9 hodinami

    Did anyone else see that bird that went into the turbine? 5:49

  • RandomShart
    RandomShart Před 10 hodinami

    Attenborough needs to get down there quick, some fish just died from eating plastic balls.

  • E and T Gaming
    E and T Gaming Před 10 hodinami

    5:50 the bird

  • muzik dusmani
    muzik dusmani Před 11 hodinami

    Başlık Türkçe video İngilizce bravo çok akıllısiniz.

  • Jerome B
    Jerome B Před 11 hodinami

    why doesnt the boat's propeller destroy the shade balls?

  • Argonic Berries
    Argonic Berries Před 11 hodinami

    It’s really rare to see 96 million of anything.
    Our body cells: Am I a joke to you?

  • shooting6lasers
    shooting6lasers Před 11 hodinami

    Even food grade plastic deteriorates especially under constant amount of sunlight.

  • Suraj Fella
    Suraj Fella Před 12 hodinami

    There are 60k comment.. If you are find me.. You are Legend

  • bruh xd
    bruh xd Před 12 hodinami

    5:50 that my countries plants! Thai air

  • Leo M
    Leo M Před 13 hodinami

    Drinking water reservoir with a motor boat?! Wut?...

  • Alex Hagen
    Alex Hagen Před 13 hodinami

    You guys are all going die of cancer lol

  • J K J
    J K J Před 13 hodinami

    First invent more and more waste later cry on environmental disaster.. and so on ...

  • J K J
    J K J Před 13 hodinami

    Yet another plastic waste dumped

  • Brady Lange
    Brady Lange Před 14 hodinami


  • Sans&Flowey
    Sans&Flowey Před 14 hodinami

    That plane converted a bird into a chopped up meal

  • Duolingo
    Duolingo Před 15 hodinami

    Make it 100 million

  • lord war
    lord war Před 15 hodinami

    but when you drive your boat .. the sun reaches to the water .. is this harmful ? can it create bromate or what ever

  • Zap Gun
    Zap Gun Před 15 hodinami

    I think the regular crystalline structures this forms are probably the coolest feature of this. It's a very clear and decently accurate representation of how certain metals behave. Now I'm curious to see what it would look like if you used two or three different sizes of balls.

  • Meow Maximum
    Meow Maximum Před 16 hodinami

    *sees city*
    I crashed my fighter jet motorcycle there once.....

  • Zweihander
    Zweihander Před 16 hodinami

    This lake got some real balls

  • S H
    S H Před 22 hodinami

    Okay Doug DeMuro

  • Denki Karminari
    Denki Karminari Před 22 hodinami +1

    Scientists:*finds a new chemical
    Also scientists: LETS NAME IT BROMATE!

  • Mr. chicken Man
    Mr. chicken Man Před dnem

    What are those

  • Gagik Ginosyan
    Gagik Ginosyan Před dnem +2

    the water i get from L.A. is not just green its brown now, water quality in L.A. got worse. but i have full filtration system

  • Keary Ciamaga
    Keary Ciamaga Před dnem

    🐦 @ 5:52 ouch

  • Whyte Boy
    Whyte Boy Před dnem

    She said the birds were loitering, she calls the police on everyone lol

  • Marcos Augusto Ferrarini

    Amazing - thanks

  • Tonia Plummer
    Tonia Plummer Před dnem

    So cool? Um....not ....man =stupid

  • 662 Omycram
    662 Omycram Před dnem +4

    It’s very rare to see 96 million of anything
    Me goes to beach ‘wow a trillion sand

  • Artism UwU
    Artism UwU Před dnem

    oh nooooo the bird ;_;

  • DogCat Party
    DogCat Party Před dnem +1

    Continued: 'Homesteadonomics' with a video maker who looks like an Olympic athlete.

  • DogCat Party
    DogCat Party Před dnem

    September ll, 2019 Never Forget Building 7 Greenpeace should watch and discuss this video. This is probably going to be just as toxic as the problem they are trying to fix. Arizona has had great success with encouraging rainwater storage (overcoming it without toxic chemicals, with biodegradable 'cookies' that kill mosquito larvae). Watch Homesteading off the grid. Have a great day, decade, etc.!

  • Carlos Diaz
    Carlos Diaz Před dnem

    Re lindo y chevere

    NEW CALEDONIA Před dnem

    Of drinking water? a boat spitting oil, strange

  • mohammad younes
    mohammad younes Před dnem

    compare this smart brilliant project with ( ice mountain project) introduce by (sheikhs of emirates) whom wanna drag an ice mountain from the north pole to the emirates beach and they think that it will milting make the area cool and reduce temperature of desert >>> hahahaha im rly feel shame when my ( non - Arab friends mention this kind of retard acts by our princes ) hahahha ................((sory for my bad English))

  • dstnkrs
    dstnkrs Před dnem

    We just passed it

  • light2tube
    light2tube Před dnem +1

    Interesting 👍

  • Villain Crew
    Villain Crew Před dnem

    I'm going to write a comment and not include the bird at 5:51 or mention the boat driving through the drinking water.

  • Kocham Cie
    Kocham Cie Před dnem

    Anyone still here 2070?

    BEN MONARCHE Před dnem

    7:36 me when I accidentally ate my subway with some Carolina reaper

  • John Bali
    John Bali Před dnem

    Really impressive

  • nilesh barshe patil
    nilesh barshe patil Před dnem

    if its in india ppl use that ball to play cricket

  • P Raj
    P Raj Před dnem

    The black teeshirt biker isnt much of a talker.

  • Nero Azmi
    Nero Azmi Před dnem

    seems like large lake of boba tea

  • fox mulder
    fox mulder Před dnem

    They used 2 use iodine to disinfect water then they found out it was doing good for people so they switched to chlorine in water and bromine in breads etc because they EXTREMELY TOXIC!!

  • the thing
    the thing Před dnem +5

    Imagine all the balls are pewdiepie fans and the boat IS pewdiepie

  • Zaheen Mistry
    Zaheen Mistry Před 2 dny

    Legend has it, the birds are still depressed.

  • Pie GT
    Pie GT Před 2 dny

    Pewdiepie has more subs then these balls in the reservoir!

  • The Monster
    The Monster Před 2 dny

    Veritasium:It’s really rare to see 96 million of anything
    Atoms:Am I a joke to you?

  • Ben Grech
    Ben Grech Před 2 dny

    Black balls matter.

  • Phil
    Phil Před 2 dny

    Ehhhh.... why didnt they just build a roof or sth?

  • Abyss
    Abyss Před 2 dny

    Workers: *Puts 96M black balls in the reservoir*

    Water: *Am I a joke to you?*

  • M3TA
    M3TA Před 2 dny +1

    The CHclip algorithm is on crack.