How to save 51 billion lives for 68 cents with simple Engineering

  Shikime 10,821,259

Mark Rober

3 vjet më parë

Using the power of engineering and brilliant inventions to save lives!!! Great times collab-ing with Bill and Melinda Gates! You should check out the Gates Annual Letter here:
Pre-order a paper microscope here-
Read the published paper on the paper centrifuge, its cool-

0:15- The Ocean- Andrew Applepie-
2:18- Sweet Tomorrow- Andrew Applepie-
4:21- Berlin- Andrew Applepie-
7:54- Special song written just for me- Lincoln Hoppe,

Summary: I met with Manu Prakash from Stanford to talk about 2 of his labs' inventions the Foldscope and the Paperfuge. Combined these cost only 68 cents and they can be used to diagnose Malaria. Both of these are examples not only of simple, brilliant design, but of how engineering is used to make a positive dent in the world.

I make videos like this once a month all year long while supplies last:
FACEBOOK: MarkRoberALnets
TWITTER: #!/MarkRober
INSTAGRAM: markrober

THEpowerOf-Roblox 2 orë më parë
I thought there was 8 billion people om the world 🌎 🤔
Thathsara Amarasinghe
Thathsara Amarasinghe 4 orë më parë
"We should take your blood!" Wow, that was dark
Alphaturd8 Cee
Alphaturd8 Cee 8 orë më parë
There is only 7 billion people in the world so you can’t save 51 billion lives when there are only 7 billion
T smith
T smith 11 orë më parë
Aaaa my friend
Varun Suriya
Varun Suriya Ditë më parë
Somebody make this man my teacher 😂
kys vibe
kys vibe Ditë më parë
This is impressive ☺
Zubaid Ditë më parë
i am from india and i am 12 yrs old boy
hl 225
hl 225 Ditë më parë
I have one of theses and I exidently sit on it Then I said: well it’s sit proof too
steve gerrd
steve gerrd 2 ditë më parë
51billion? 🤔
Odyssey Ditë më parë
Everyone who came before us...
The Lost Techie
The Lost Techie 2 ditë më parë
51 billion life’s??
Odyssey Ditë më parë
Everyone who were before us.
Thatunknown _user
Thatunknown _user 2 ditë më parë
Plus the shaking thing is a really great entertainer and exercise
Abdaal Zeb
Abdaal Zeb 2 ditë më parë
I just watched nas,s video about this
Gauge Bishop
Gauge Bishop 2 ditë më parë
Should have been 69 cents
Princepug ø
Princepug ø 2 ditë më parë
He killed more by confirming malaria cases
Sandeep Shukla
Sandeep Shukla 2 ditë më parë
Where can I order this foldscope?
Jack the man!
Jack the man! 2 ditë më parë
those close-ups are discusing
AnonyMUSE 3 ditë më parë
I wanted to buy several kits for trips to indigenous areas overseas but they’re $29.99 each, not even close to the price Mark states in the video.
Aditya Velanjkar
Aditya Velanjkar 3 ditë më parë
Anyone from India.
Wesley Mays
Wesley Mays 3 ditë më parë
Mark in 2023: Solving overpopulation with a paperclip
Abdullah Shah
Abdullah Shah 3 ditë më parë
so we saved trillions of lifes cuz this vid got 10.8 mil views
Tristian Madden
Tristian Madden 4 ditë më parë
there is only around 8 billion people on earth so how are u saving 51 billion people?
Adrian Benito
Adrian Benito 4 ditë më parë
Mark rober:How to save 51 B lives Me knowing only 7b people in the planet:😕
Jannik Heidemann
Jannik Heidemann 5 ditë më parë
,,How to save 51 billion lives for 68 cents each with simple Engineering" would be the more accurate title.
trick or trick
trick or trick 5 ditë më parë
This video gave me the chills
Wxsted_Vxbesss 5 ditë më parë
Beautifull too see this.
Max sukarno
Max sukarno 5 ditë më parë
wonderful this is the real heroes because They are Believable. thank you for sharing with us these amazing videos. 🌱
SOCIAL SCIENCE 6 ditë më parë
I always want to become a scientist
PRAKASH creates
PRAKASH creates 6 ditë më parë
Appreciateting manu from india
DoLLaR Sign OG's
DoLLaR Sign OG's 6 ditë më parë
Another Talent india lost
Streamer_Btw 248
Streamer_Btw 248 6 ditë më parë
There's only 7 billion people on earth i think you mean 51million
DamionDreggs Technologies
DamionDreggs Technologies 6 ditë më parë
I can work out the paper microscope, and the manual centrifuge. But what do I use for the blood vial?
Jean Luo
Jean Luo 6 ditë më parë
wow thats amazing you can see, blood cells i always only saw those in books and never thought i would be able to this is so cool
Jean Luo
Jean Luo 6 ditë më parë
it actually is amazing tho
Amanda A
Amanda A 6 ditë më parë
Are Manu and Saad still doing this? Also, is there a way to donate to this cause, other than buying the paper microscope and centrifuge?
Doveranalyst 6 ditë më parë
Goddamn. So proud of ManuPrakash, Saad Bhalma and whole team Love from India!
Finn Robinson
Finn Robinson 7 ditë më parë
68 cents *We were on the verge of greatness, This close* **holds fingers together**
SweetSpot909 7 ditë më parë
such brilliant scientists. Their work have probably saved tens if not hundreds of thousands of lives.
GoldDropper 7 ditë më parë
51 billion humans You just confirmed that every human has 6 FBI agents.
eagle strike
eagle strike 7 ditë më parë
Mark Rober: *makes amazing video about malaria testing device for 68 sense my brain: hEY hIs NOsE IS CLoGGeD!!
Nguyen Max
Nguyen Max 7 ditë më parë
LMAO, i couldn’t stop laughing at “microbial roomba” XD
RM21 7 ditë më parë
Manu uyir❤️
sonaarr 7 ditë më parë
>random middle school girls: sign petition >this dude: makes microscopes out of paper
Saransh Saini
Saransh Saini 8 ditë më parë
I am just proud to see my people change the world.
IRAPROXZYY _ 8 ditë më parë
So umm, I’m guessing it wasn’t safe to drink water from that river even though it was running water and clear? Oop
Seth Castillo
Seth Castillo 8 ditë më parë
Am i the only one who searched stars in telescope vision after this i crezy
Owen Olson
Owen Olson 8 ditë më parë
Lance Pourian
Lance Pourian 8 ditë më parë
Srihith Reddy
Srihith Reddy 8 ditë më parë
This is amazing
Rohan 8 ditë më parë
video title saving 51 billion lives while the population is 7.3 billion comment from 2020 i am from future
anDROID Gaming
anDROID Gaming 8 ditë më parë
this would be great if 68cents was the buying price, but its not
Jameela Cetak
Jameela Cetak 8 ditë më parë
where do i buy that
sebastian steppat
sebastian steppat 8 ditë më parë
everybody gangster till he doesn’t tell you if the test came up positive for malaria
3YW4B 9 ditë më parë
we neeed this 4 corona
Alexa Is crazy to
Alexa Is crazy to 9 ditë më parë
8:00 see that guy in the background he already buying it
Jayden Roady
Jayden Roady 9 ditë më parë
Imagine disliking this video
Sly Fox Gaming
Sly Fox Gaming 9 ditë më parë
As time goes on. the world would get better. The world now : I stay inside while 2020 passes.
WhatislifeBRUH 9 ditë më parë
Oh so thanos created malaria
Hadley Aesthetics
Hadley Aesthetics 9 ditë më parë
There’s not even 51 billion people
Schwetha !!!
Schwetha !!! 8 ditë më parë
PewDiePie Kids Channel
PewDiePie Kids Channel 9 ditë më parë
It could’ve been 69 cents but okay
Parvathy ph
Parvathy ph 9 ditë më parë
Someone give this man a medal 🥺
Moto Moto
Moto Moto 9 ditë më parë
Glad my countrymen are doing great things but our neighbours seem to be disappointed on us
Zlatin Mihai
Zlatin Mihai 9 ditë më parë
The opportunity to make it 69 ahhhh
GGvian cg10
GGvian cg10 10 ditë më parë
DasGood! 10 ditë më parë
If I had the option to save 51 billion lives for $0.61... I would
Tini Gaming
Tini Gaming 11 ditë më parë
When will mark learn that there is only 7 billion people in the world
Samarth Yencharla
Samarth Yencharla 7 ditë më parë
@Schwetha !!! lool
Schwetha !!!
Schwetha !!! 8 ditë më parë
Samarth Yencharla
Samarth Yencharla 10 ditë më parë
he means that thats hoe many people have been alive this whole earth generation but CURRENTLY there are only 7 bil ppl
Samarth Yencharla
Samarth Yencharla 10 ditë më parë
@Benjamin Jo he means that thats hoe many people have been alive this whole earth generation but CURRENTLY there are only 7 bil ppl
Benjamin Jo
Benjamin Jo 11 ditë më parë
Have you heard of future
Urnamebe_CrYpT /j_&son
Urnamebe_CrYpT /j_&son 11 ditë më parë
There are the proud kids of India
Magical Paper
Magical Paper 11 ditë më parë
Who else is trying to grow their YT channel during this quarantine, let’s help one another. Much love.
ThaOneBird 11 ditë më parë
Wait. Isn’t there 7 billion people on the earth ?
Misha Brown
Misha Brown 11 ditë më parë
How save 51 billion people with only 7 billion on earth
aTurtel 11 ditë më parë
These people are extreme DIY crafters
Alan George
Alan George 11 ditë më parë
How to save 51 billion lives 7.8 billion people: am i a joke to u.
Edith Dela Cruz
Edith Dela Cruz 12 ditë më parë
And ppl say India is $h!T
Mike Gaming
Mike Gaming 12 ditë më parë
Fun fact: Manu Lives In India Or Born In India
Rumade Sucks
Rumade Sucks 12 ditë më parë
Thanks bro 🙏 this made me fall asleep 👨‍🦲✨
Ag Me
Ag Me 12 ditë më parë
Mark: *How to save 51 billion lives for 68 cents* People living with less than a dollar a day: 😐
Gautam Balu
Gautam Balu 12 ditë më parë
Guys that dud mr prakash from india my dad knows him and that dude is awsome
Aarush Lal
Aarush Lal 9 ditë më parë
Kids Hamster care
Kids Hamster care 12 ditë më parë
I could be wrong but the last time I checked there are only 7.8 billion people in the world...
Kids Hamster care
Kids Hamster care 12 ditë më parë
Oh sorry.
Boi 45
Boi 45 12 ditë më parë
It says billions of LIVES not just humans.also animals
Potato Bread
Potato Bread 12 ditë më parë
Title: " How to save 51 BILLION LIVES for 68 cents with simple Engineering " Me: *Googles up how many people are alive on Earth* Also Me: hmm what else is counted as human.... I do not mean any hate I just wanted to make a joke :D
Doveranalyst 6 ditë më parë
Technically if you re examine the same blood of same many times can you save the same life? You do know that people get malaria several times in the same life, right?
breian van haaren
breian van haaren 12 ditë më parë
Thank you
Turbo Gamer
Turbo Gamer 12 ditë më parë
Beuh there are only 7 billion people in the world so idk bout 51 billion
JustViggo 64
JustViggo 64 12 ditë më parë
If you actually watched the video you’d understand that
xx pingu the reaper xx
xx pingu the reaper xx 13 ditë më parë
51 billion?
NSF_FuZion 13 ditë më parë
HOL UP! How are we supposed to save 51 billion lives, When the ENTIRE worlds population is 7.6 billion??? Plz explain to me
Mr.Chicken 13 ditë më parë
Unknown X
Unknown X 13 ditë më parë
Power of India
utkarsh kumar
utkarsh kumar 13 ditë më parë
Hmm i just realized you have mentioned about saving 51 billion lives. So have you accounted for future generations too as currently there are only 8 billion people in the world right now ?
Daniel Crain
Daniel Crain 13 ditë më parë
So does Mark Rober have Malaria or not?
Banov Riskiansyah
Banov Riskiansyah 14 ditë më parë
I dont need it I dont need it... I dont need it....... *I NEED IT!!!!!!*
Henry Pham
Henry Pham 14 ditë më parë
Me realising there’s only 7billion people
Namara Bhatiti
Namara Bhatiti 14 ditë më parë
Wait wait wait, 51 billion?
GuestHater38 - Roblox
GuestHater38 - Roblox 14 ditë më parë
68 cents? We were at the verge of greatness
Sky Wolf
Sky Wolf 14 ditë më parë
I wish we could see COVID with this... can we?
Sky Wolf
Sky Wolf 13 ditë më parë
Ok well, Scientists need to think faster
Anubhav Behera
Anubhav Behera 14 ditë më parë
I don't think we could. Covid is incredibly small... much smaller than malaria.
Midoriya Gaming
Midoriya Gaming 14 ditë më parë
There not even 51 billion people or animals in the world there are only 7.2 billion ppl but idk about animals
Jase McAda
Jase McAda 14 ditë më parë
is "Malaria" common because it freaked me out?Sice its deadly
Top 10
Top 10 14 ditë më parë
Heads of to you india
Ethan Combs
Ethan Combs 14 ditë më parë
How do we save 51B lives when there be 7B peeps on earth
Anubhav Behera
Anubhav Behera 14 ditë më parë
Their talking about human history. 100 billion ppl lived throughout all human history and 51 billion died of malaria. That's how deadly malaria is.
Parcley ¿
Parcley ¿ 15 ditë më parë
Can you do this now for coronavirus? :)
Azim bin Noushad
Azim bin Noushad 15 ditë më parë
Did you know a cell is a size of an fork HOW LARGE IS THAT
Jonathan Hernandez
Jonathan Hernandez 15 ditë më parë
The disc and bars was not invented by anyone actually. They were just made for toys for kids to see how fast they could spin it and then the rope should be pretty hot caused by friction and a portion of energy in converted into thermal energy.
Kaje Simpson
Kaje Simpson 15 ditë më parë
Please keep doing videos like this!!
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