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Why Are 96,000,000 Black Balls On This | Texan Ribs Are Bigger Than - At Up-Tube.com

Why Are 96,000,000 Black Balls on This Texan Ribs Are Bigger Than 2 months ago   12:07

Veritasium
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.

Comments 44257 Comments

Darin Bell
Maybe someone already asked, but wont the dark color balls increase the temp of the water? Would it have been better to use a lighter color?
Key dox
I received one shade ball today thank you sososo much!!
Max Amillion
Um yeah. Polyethelene in direct sunlight leeches chemicals matter what that dude said.
BillieBobBrubeck
So they put the black balls in the water and guess what they found? Black absorbs heat and the water evaporated. The guy who invented this said that they should have used either white or chromed balls.
Some Guy
Looks like a giant experiment!
Richard Mills
They last ten years.

Enough time to develop a machine that'll get them out again!
sebzeus
so in 10 years gotta clean this up
Xavi Atkinson
Its a shame, they stop the birds from going on the water
Xavi Atkinson
Well this is stupid
Susan Ananda
Were those balls made in China?
Colinio
It's a fantastic idea, so long as you don't drink the water!
K G Eve Art & Photography
Why would you have the filtration plant before the reservoir?
_randomOfMe
Tell me when the views count exceed the black balls
Troy
Someone made $32 million off of these balls...
KennyLeeSundowners
dumb fucks
IDKBOB TA
Here's a little lesson in trickery.
블루문 Bluemoon Travel & Plant
Wow, Very nice video friend!
Thanks for sharing.
Your video is very interesting.
Super Like...
Have a great week.👍👍
Benjamin Schutz
Sometimes when I'm bored, I like to get my balls wet too
todd morris
Then eat it buddy every night, all that food grade black plastic.
todd morris
Chlorine causes cancer period. There is ways that are non toxic to perfect water and add the minerals and oxygen left. Plus they add cancer causing fluoride. Literally all city water is toxic, some short term, some long term.
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Texan Ribs Are Bigger Than Why Are 96,000,000 Black Balls on This 2 months ago   03:40

Terry Black's Barbecue in Austin, Texas is known for serving giant beef ribs that are larger than your face. Each day, the restaurant cooks nearly 130 briskets "low and slow" for hours. In addition to the massive beef ribs, you can get an assortment of side dishes all made by hand.

See more from Terry Black's BBQ: http://terryblacksbbq.com/

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