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.

Scientists have combined ultrasound, viruses and synthetic drugs to control regions of the brain.
Check out Skillshare: https://skl.sh/veritasium (first 500 get 2 months free)

Special thanks to Prof. Mikhail Shapiro and Dr. Jerzy Szablowski:
http://shapirolab.caltech.edu

Human brains are complicated - the most complicated thing in the known universe, many people say. So far we understand little - just that certain regions of the brain appear to be involved in certain activities and certain disorders. In extreme cases this has led to the practice of removing sections of the brain, or using electrodes or optical fibers to control activation rates. What is unique about this approach is it offers a way to turn on and off specific brain regions without invasive surgery. It has promise because it combines existing technologies: micro-bubbles, ultrasound, synthetic viruses, and synthetic drugs to achieve this goal.

Special thanks to Patreon supporters:
Donal Botkin, James M Nicholson, Michael Krugman, Nathan Hansen, Ron Neal, Stan Presolski, Terrance Shepherd

Animations and editing by Alan Chamberlain

Music from http://epidemicsound.com "Experimental1"

Mosquitoes are attracted to me and it's likely due to my genes.
This video is sponsored by 23andMe https://23andme.com/veritasium
Huge thanks to Prof. Immo Hansen and team: http://ve42.co/hansen

References:
Genome Wide Association Study for self-reported mosquito attractiveness:
http://ve42.co/MossieGWAS

The twin study showing correlated attractiveness is stronger for identical twins:
http://ve42.co/MossieTwins

Some things we know make mosquitoes more attracted to you:
Exercising, higher metabolism, higher body temperature, more body odor, being pregnant, type O blood, infrequent bathing, lactic acid, ammonia, acetone.

There are a number of folk remedies people believe protect them from mosquito bites like drinking alcohol, eating garlic, or taking vitamin B. These do not appear to provide any benefit in lab studies and in fact drinking alcohol is associated with increased mosquito activity because it causes blood vessels near the surface of the skin to dilate.

And apparently some of your attractiveness to mosquitos is simply genetic. This may be mediated through your immune system, which is what a lot of the genes identified were associated with.

Molecular models are microSnatoms: http://snatoms.com

Filming in New Mexico by Raquel Nuno
Animations by Jacqui Robertson

The opinions and conclusions drawn in this video are those of Veritasium and not 23andMe.

In Queenstown, New Zealand, I jumped off the Kawarau Bridge - the site of the first bungy jump. It was a thrilling experience, preceded by a terrifying, gut-wrenching half hour wait. All in all an awesome adventure, even if the woman fitting my harness didn't know the first thing about the acceleration of free-falling bodies.

Subscribe to Veritasium - it's free! http://bit.ly/YSWpWm
Support Veritasium - get a t-shirt: http://dft.ba/-vetshirt
Happy Geek Week! http://bit.ly/16wdDuk

Everyone has played with a mixture of corn starch and water (or at least I hope they have). This was one of my favorite experiments as a kid. Your hand slides into the slime easily when moving slowly but the mixture behaves as a solid if you hit it quickly. That is what is meant by 'non-Newtonian' - the fluid's properties change depending on its relative motion. These properties can be exploited to dramatic effect as has been shown on speaker cones before. Here I wanted to understand what is going on, what frequencies and amplitudes work best so I used a slow-mo camera.

Thanks to everyone at the YouTube Space LA for helping me film this. I couldn't have done it without you.

Music licensed from http://www.cuesongs.com
Love Lost (Instrumental) by Temper Trap
A Life in the Day by Ghost of Otis
Fortune's Fool Instrumental by Hiatus & Shura
The Man by Audio Android

Innovative research conducted in Lausanne, Switzerland has shown that a combination of neurotransmitters and electrical stimulation can restore movement to the lower limbs of previously paralysed rats. But in order for this motion to be made voluntarily the rats must be motivated to walk. This motivation comes in the form of cheering, visual cues, and of course, chocolate.

Why Trees Are Amazing: http://bit.ly/TFilQ8
Space Junk: http://bit.ly/XlLdjG
Why Astronauts Are Weightless: http://bit.ly/SuF2p1
Higgs Boson Update: http://bit.ly/Vw1Sgu

Pioneering NASA mathematician Katherine Johnson has died at the age of 101. Johnson was part of a group of African-American women who worked on critical mathematical calculations in the early days of human spaceflight, as chronicled in the best-selling book and hit movie “Hidden Figures.”

"She was an American hero and her pioneering legacy will never be forgotten,” said NASA Administrator Jim Bridenstine.

Expedition 61 Crew, Record-Setting Astronaut Christina Koch Return to Earth

Expedition 61 Commander Luca Parmitano of ESA (European Space Agency), Soyuz commander Alexander Skvortsov of Roscosmos and NASA Flight Engineer Christina Koch landed safely on Earth near the town of Dzhezkazgan, Kazakhstan, Feb. 6 after bidding farewell to their colleagues on the complex and undocking their Soyuz MS-13 spacecraft from the Poisk Module on the International Space Station. Koch completed a 328-day, 139-million mile mission on the orbital outpost --- the longest spaceflight ever conducted by a woman in history and the second longest single spaceflight by a U.S. astronaut. Parmitano and Skvortsov wrapped up a 201-day mission in space spanning 85.2 million miles.

NASA's Parker Solar Probe mission has returned unprecedented data from near the Sun, culminating in new discoveries published on Dec. 4, 2019, in the journal Nature. Among the findings are new understandings of how the Sun's constant outflow of material, the solar wind, behaves. Seen near Earth -- where it can interact with our planet's natural magnetic field and cause space weather effects that interfere with technology -- the solar wind appears to be a relatively uniform flow of plasma. But Parker Solar Probe's observations reveal a complicated, active system not seen from Earth.

Music Credit: Smooth as Glass by The Freeharmonic Orchestra

Read more: https://www.nasa.gov/feature/g....oddard/2019/nasas-pa

Video Credit: NASA's Goddard Space Flight Center
Karen Fox (ADNET): Writer
Sarah Frazier (ADNET): Writer
Genna Duberstein (USRA): Producer
Genna Duberstein (USRA): Editor
Chris Smith (USRA): Narrator
Adriana Manrique Gutierrez (USRA): Animator
Jonathan North (USRA): Animator
Scott Wiessinger (USRA): Animator
Adam Szabo (NASA/GSFC): Scientist
Russ Howard (NRL): Scientist
Dave McComas (SwRI): Scientist
Stuart Bale (University of California, Berkeley): Scientist
Justin Kasper (University of Michigan): Scientist
Nour Raouafi (Johns Hopkins University/APL): Scientist
Eric Christian Ph.D. (NASA/HQ): Scientist
Adam Szabo (NASA/GSFC): Project Support
Please give credit for this item to:
NASA's Goddard Space Flight Center

This video is public domain and along with other supporting visualizations can be downloaded from the Scientific Visualization Studio at: http://svs.gsfc.nasa.gov/13282

If you liked this video, subscribe to the NASA Goddard YouTube channel: http://www.youtube.com/NASAExplorer

Follow NASA’s Goddard Space Flight Center
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De tu boca sale aliento
Que mi alma necesita
En tu palabra hay poder
Que trae vida a mis huesos

Jesús tu nombre es el verbo de aliento
Jesús tu nombre es el agua de vida
De tu boca sale aliento
Que mi alma necesita

Jesús tu nombre es el verbo de aliento
Jesús tu nombre es el agua de vida
Oh Jesús tu nombre es mi pan.

Tú hablas y el sordo oye
El ciego ve al oír tu voz
Grande es tu poder
Grande es tu poder, Jesús

Tú hablas y el cojo anda
Con tu poder el mudo habla
Habla sobre mi
Habla sobre mí, Jesús

Era ciego y ahora puedo ver
Sordo fui y hoy te escucho
Habla sobre mí, Jesús

Preso fui y hoy libre soy
Perdido estaba, mas hoy tu hijo soy
Habla sobre mí, Jesús
Habla sobre mi
Habla sobre mí, Jesús

Habla sobre mi
Habla sobre mi
Habla sobre mi

Habla sobre mi
Habla sobre mi
Habla sobre mí, Jesús

Era ciego y ahora puedo ver
Sordo fui y hoy te escucho
Habla sobre mí, Jesús

Preso fui y hoy libre soy
Perdido estaba, mas hoy tu hijo soy
Habla sobre mí, Jesús
Habla sobre mi
Habla sobre mí, Jesús

Daniel Calveti presenta la canción Santo Espíritu, lo mejor de la música cristiana 2018

SANTO ESPÍRITU
By: Daniel Calveti
Gracia Producciones

Santo Espíritu, viento recio
Interrumpe con tu gloria este lugar
con tu poder ven haz tu obra
te anhelamos más, te anhelamos más

Tú mi compañía eterna
consuelo de mi alma
mi fuente de sabiduría
guia de todos mis pasos
Oh, oh, oh, oh, oh, oh, oh, oh, oh, oh

Llena este lugar, este lugar,
Santo Espíritu
Llena este lugar, este lugar Santo Espíritu,
llena este lugar, este lugar Santo Espíritu
Llena este lugar, este lugar

Llena este lugar, este lugar con tu fuego
llena este lugar, este lugar viento recio
Llena este lugar, este lugar.
Santo Espíritu, Llena este lugar, este lugar.

Llena este lugar, llena este lugar con tu Gloria.

Haz click para suscribirte: http://bit.ly/DanielCalvetiOficial

Letra: (Daniel Calveti y Rojo)

que piense en ti esta sociedad,
que piense en ti aquel que viene y va,
que digan que tu eres el Señor,
que piense en ti toda mi ciudad

De Norte a Sur
que las naciones bajen un pedazo de cielo,
que abrasen la humanidad
De Este a Oeste
que los gobernantes digan
que la paz se encuentra solo en Ti
Tú eres esperanza
eres medicina
y nuestras crisis en ti encuentran la salida

que piense en ti esta sociedad,
que piense en ti aquel que viene y va,
que digan que tu eres el Señor,
que piense en tu toda mi ciudad
que digan que tu eres el Señor,
que piense en tu toda mi ciudad
ahhhhhh
ohhh

De Norte a Sur
que las naciones bajen un pedazo de cielo,
que abrasen la humanidad
De Este a Oeste
que los gobernantes digan
que la paz se encuentra solo en Ti

Tú eres esperanza,
eres medicina
y nuestras crisis en ti encuentran la salida

Eres esperanza,
tú eres medicina
y nuestras crisis en ti encuentran la salida
uohhhhh que piense en ti toda mi ciudad
que piense en ti esta sociedad,
que piense en ti aquel que viene y va,
que digan que tu eres el Señor,
que piense en tu toda mi ciudad

que piense en ti esta sociedad, Jesús,
que piense en ti aquel que viene y va,
que digan que tu eres el Señor,
que piense en tu toda mi ciudad

Haz click para suscribirte: http://bit.ly/DanielCalvetiOficial

Letra de Abre los Cielos de Daniel Calveti

Abre los cielos, derrama tu gloria
Abre los cielos, derrama tu gloria
Abre los cielos, derrama tu gloria, aquí

Abre los cielos, derrama tu gloria
Abre los cielos, derrama tu gloria
Abre los cielos, derrama tu gloria, aquí

Que su paz te cubra,
que su amor te abrace,
Que todo lo que pidas
de su casa hoy venga a ti

Que su paz te cubra,
que su amor te abrace,
Que todo lo que pidas
de su casa hoy venga a ti

Abre los cielos, derrama tu gloria
Abre los cielos, derrama tu gloria
Abre los cielos, derrama tu gloria, aquí

13. Manejando el Tiempo - Daniel y Shari Calveti - Devocional Cristiano Para Parejas

Prédicas Cristianas | 1 Samuel 17. Daniel Calveti. Mensaje en la iglesia Lakewood. Declara que toda intimidación del enemigo que estuvo en el pasado se acaba en el nombre de Jesús.

Haz click para suscribirte: http://bit.ly/DanielCalvetiOficial

Letra de Umbrella de Daniel Calveti

Everybody needs umbrellas,
to you cover from the rain.
Everybody needs umbrellas,

to you cover from the rain.

Love the weak say I´m stronger,
My strenght comes from the Lord.
I will sing and make some music,
this is a new day.

Everybody needs umbrellas,
to cover from the rain.

The Lord is my savior,
His love endures forever,
The Lord is my shelter,
The lord is my big umbrella.

Everybody needs umbrellas,
to you cover from the rain.
Everybody needs umbrellas,
to you cover from the rain.

Love the weak say I´m stronger,
My strenght comes from the Lord.
I will sing and make some music,
this is a new day.

Everybody needs umbrellas,
to cover from the rain.

The Lord is my savior,
His love endures forever,
The Lord is my shelter,
The lord is my big umbrella.

I´m safe in your hands,
Not gonna worry no more.
You gave me life Lord,
Not gonna worry no more.

Daniel Calveti predica una fresca palabra desde la iglesia Rey de Reyes en Argentina. Haz de este mensaje una declaración para el 2019. Vas a ser un cambiador de ambientes.

Haz clic para suscribirte: bit.ly/DanielCalvetiOficial

Habla sobre mí, esta canción la escribí junto con mi esposa Shari, y es el primer sencillo del nuevo disco, está basada en Ezequiel capitulo 37 versículo 10, allí el pueblo de Israel estaba en un momento muy difícil y Dios en una visión lleva al profeta Ezequiel a un valle de huesos secos y le pregunta a Ezequiel, "¿Podrán estos huesos vivir?", Ezequiel contestó sinceramente y dijo: "Señor omnipotente, solo tu sabes si pueden vivir" y Dios le dijo: "Profetiza Ezequiel, habla de parte mía a estos huesos secos y diles que se levanten", y al instante recibieron aliento de vida.

No sé que tu necesitas que Dios hable sobre ti, que hable libertad salud, restauración, pídele, Él esta a favor tuyo.