This is nuts i was able to download these videos in prison i fell asleep everynight watching and rewatching these videos!! I had no idea they were from KZread...😳

Very impressed with how many different directions this series has gone.

@crashcourse

5 жыл бұрын

We've tried REALLY HARD! So thank you :) - Nick J.

@planetpeterson2824

5 жыл бұрын

CrashCourse you’re welcome! I teach earth science on my channel and these last 2 videos have been right up my alley! Awesome work

"Famine has always been linked to distribution, or the political-economic process of moving food around, not only how much food is produced." 10 of 10 Crash Course. Some groups of people just don't care that others starve to death.

This "history of science" series has been really great and I hope it continues for years to come because there is so much science history to learn about.

@crashcourse

5 жыл бұрын

Thank you so much! Unfortunately we'll be wrapping this particular History of Science series up at episode 46. BUT, that doesn't mean we can't do another one some time and go a little deeper into some areas we skated over :) - Nick J.

@jeremiasrobinson

5 жыл бұрын

@@crashcourse Seasons 2,3, etc!

@Anonarchist

5 жыл бұрын

My history of science class in college ended with the human genome project. Eventually history always catches up to you.

@jeremiasrobinson

5 жыл бұрын

@@Anonarchist Just because the class ended doesn't mean there wasn't more to learn. Hundreds of years can be condensed into one class but there is still more of the story out there.

@joy4229

4 жыл бұрын

@@crashcourse You can have a complementary website. That'll be really awesome and exciting.

Heeeeyyyyy I just went to a conference on this topic and I’ve got a couple things to add! Great video, btw. India is a super interesting example in the Green Revolution because, on the surface level, it fits into that classic Malthusian problem where population growth outpaces food production. In response to this, the US proposed hybrid crops, mechanization, and herbicides and pesticides to increase yields. But here’s the thing with that. The costs for owning a farm quickly went through the roof. As the technology for increasing yields became the new normal, farmers with even the smallest farms had to invest in the new technology just to keep up. This meant that they had to buy seeds every year (as there are lots of issues with trying to use seeds from hybrid crops for sowing the next year), and investing in a lot of expensive and often dangerous chemicals that the plants needed to thrive. At the same time, the US held a lot of the patents for seeds, fertilizers, etc and they gained the profits from these farmers. Whether their intentions were noble or malicious, these changes resulted in bankruptcy and loss of jobs or farms for many poor farmers. The US also refused to work with countries who wanted to implement land redistribution or heavy agricultural subsidies. Although similar policies were (and still are) vital to the survival of the American agricultural system, such policies in “developing” counties smelled like communism to 1960s America. Basically it’s a mess. Increasing yields was necessary but there was probably a better way to go about it and the US did a lot of things that felt very benevolent at the time, but proved to have some dangerous consequences in the long run. International agricultural policy, y’all

@jaideepsingh4395

5 жыл бұрын

Phew that was long

@mamoksh

5 жыл бұрын

Sounds so fascinating to learn about; international agricultural policy is surprisingly interesting lol. Do you know how I could learn more about this subject? You've really sparked an interest haha

For anyone curious, Rachel Carson's Silent Spring is still very much worth a read today. I read it recently outside of my environmental science classes, and found it really easy to follow and understand. I took a great environmental history class that touched on a lot of this in depth- and while I love that Crash Course does so well at explaining big picture stuff, exploring some of these things in depth would be super cool. (I understand why that doesn't happen with these though, not meant as a critique!)

In my graduate program we talk about these problems all the time. Such big issues and it's so hard to find good solutions. Great video and love the series!

Intro music is a bit too loud. Every time it starts I turn the volume down... Could you adjust it to the volume of the voices in the videos?

I knew I could depend on the show to discuss the whole world, and not just the US. :)

This makes me so excited this video is touching on what I focused on for my thesis- algal polycultures vs monocultures :)

I would have liked to hear a bit more discussion on the negative effects of the DDT ban and the controversy of Silent Spring.

"Less dangerous" and yet they named it PROJECT *STORMFURY* The Cold War was *wild*

@ReadyMindsetGo

4 жыл бұрын

*is

Thank you for talking about the Bhopal gas tragedy.

Arundhati Roy the manbooker prize winner indian novelist calls it worlds largest demon crazy because of the absence of democractic principles. Just for kind info. This series has really been more intersting than any other series on crash course. It's the accumulation of all.

I love your sense of humor Hank💚Green

Such an awesome presentation... We do all share a house. One big, beautiful, green-blue-orb-hanging-in-space house, but also a very fragile house.

good video. i think taking a nuanced look on the green revolution both acknowledging positives, which there were a lot of, and negative and political factors as well was great. i feel like i have a much better and more nuanced understanding of this now.

Crash Course has once again managed to show that they're up to the seemingly impossible task of addressing SO MANY DIFFERENT aspects of science. Impressive. I love this series.

I love your sense of humor Hank

For a deep dive on these issues check out the 2018 book "The Wizard and the Prophet" (The "wizard" is a reference to Borlaug)

All I have to say is that the color of the wall behind the host is the most mesmerizing shade is brown I've ever seen and I MUST recreate it.

pssst, 2:35 you mention bacteria fixing nitrogen for plants... it's primarily done by fungus (mycorrhizae) not by bacteria... Also, excess phosphorus in the water is a greater driver for algae growth than excess nitrogen.

@BubblewrapHighway

5 жыл бұрын

Fungus often recruits bacteria to do the job for them. ; ) It's all connected.

"One Big Bioshpere" 0:11 wouldn't have noticed but i paused it right on that slide.

I learned about some of these things from Citation Needed, albeit in a much different presentation form.

amazing all the things!!

Im dying to know research sources, they would be perfect for my research paper

Also Rachel Carson FTW

Very nice professor ❤

$20 says this episode will have an inordinate amount of contributions to the blooper reel.

I was born in 1954. For that I have witnessed the use of DDT used to fumigate our village. I saw the difference between the height of rice varieties between my uncle's farm in Upi, Maguindanao (1960) and the rice that was grown in my province (Lanao del Norte) later (1970). I have observed the difference between produce from non-fertilized farm and fertilized farms. I learned from my elementary science classes that man desires to control nature. Now, I realized that what was done during the time that I was growing up have negative effects to the environment and to us, HUMANS.

@reysiejaycuares5289

4 жыл бұрын

Before , I ask myself , if the thunder storm starts fall down , is it means the whole world will rain ?? will just like the environmental controll. We can't easily control the happening nor to predict. Sometime's building up some question's regarding on happening, making us also to realize how the fertilized farm and non fertilized farms grows. Yes , I wonder why the life humans, animals and others need to discover through science. I'm blessed and inspired in this video it really give so much ideas :) thankyou maam for bringing me in the life HISTORIANS happy to discover and learn new thing's ..

@skylight6820

4 жыл бұрын

Environmental Control Technology is a technical program offering the theoretical, technical, and problem- solving skills essential for employment in the heating, ventilation, air conditioning, and refrigeration industry. Pollution control is an essential task. There are four types of control: legal, social, economical, and technological measures, which help to prevent the pollution by various methods of operations. Waste products enter the environment in various forms and threaten the quality of the air, land, and water. The presence of waste products in water is especially serious, as many of these products can enter the food chain, where the biochemical processes can rapidly increase their concentration to toxic level. Hence, it is extremely important to study the methods of treating waste products and eliminating them from aqueous system.

@iftisambalindong7381

4 жыл бұрын

We had so many knowledge about science especially in the environment and ecosystem, but most of us dont know how to control and stop doing things that could cause pollution in our environment or worst some people already know how but they dont do it. We must be very thankful to the agriculturists and farmers because they are the one whose always trying to preserve our environment by planting, aside from earning for money their intention is to plant something that could balance the pollution in our environment. Also scientists are trying to discover chemicals that could help the farmers in their planting. Salute to the environmentalists.

@ainiebaldecasa8800

4 жыл бұрын

The development of ecology revealed a deeply connected world. Overall, across industrial societies, agriculture changed a lot as engineers developed machines like tractors, chemists created new fertilizers and pesticides, and plant geneticists bred hybrid seeds. Plant need the nutrient nitrogen to grow. But plants can’t fix their own nitrogen from air, so they need bacteria, or human-made fertilizers like ammonia, to do it for them.

@jeamilainidal714

4 жыл бұрын

Environment, what on our surrounding is very beneficient to us, where can we find our need is what on our surrounds us will gave. It is so sad how people abuse our surroundings with out even thinking that the abuse that people do has a tremendous effect to us. People doesn't know how to controll what we have right now that is why natural disaster were prone in every side of us. There is no doubt that the world can live with out humans.

Love this series 🔥🔥🔥🔥🔥🔥

Am I the only one that feels excited when a crash course notification pops up?

Educational!

There should be a video on the in-depth description on Nutrition Facts. What each thing is and dose for you and how (much u should have, many garms, many percents, or high or low an item should be on it). Not really focusing on one specific food either. Like why carbs and trans fats are bad or why u need more saturated fat and less sugar for ketosis, etc. Ik this comment dosent matter this video, but yea.

Have you been reading "The Wizard and the Prophet: Two Remarkable Scientists and Their Dueling Visions to Shape Tomorrow’s World," by Charles C. Mann? Most of this video sounds very familiar, based on the half of that book I read. I did not finish it yet because I got too busy with work and had to return it to the library as I had already renewed it the maximum number of times. I might check it out again to finish, but I have other things checked out now I'll try to read first.

3:41......... Eutrophication..........right..........

Wait Hank, I'm confused. You said that plants cannot take nitrogen out of the air and fix it in the ground, but isn't this exactly what legumes like soybeans do? Also, why do the algae blooms from excess pesticides running off into nearby bodies of water use up the oxygen? Don't these green plants absorb CO2 and give off O2? Thanks in advance...

The Haber process does NOT strictly require fossil fuels to work! Something requiring energy and that energy currently being mainly produced by fossil fuels does not mean the process itself is bad! Everything needs energy. Energy can be clean.

As far as pollution a good documentary series to search for is 'late lessons from early warning' it covers asbestos to DDT and PCB's. These toxic chemicals added to products like plastic and how they effect the endocrine systems and animals offspring. When people are so focused on climate control the real disasters are happening in the environment.

I can't imagine what this kind of work looks like..

Oh Boi oh Boi oh Boi, that ending

So the solution for the biosphere that has gone bad because of the unintended consequences of engineering is geoengineering? Anyone else sees the dramatic logic flaw here? Can we engineer our way out of every problem? or maybe can we change the approach for more cultural/dietary/non-interventionist approach?

What is founder of political Zionism, Theodore Herzl, doing there at 10:37?

Great job on the presentation work done here but I got to say, that new transition sound (atleast new to me), it quite annoying.

you missed spelled "biosphere" at the beginning

Very interesting video. I certainly learnt some new things. However I was surprised how negative the ending was to synthetic products for crops. Especially at a time when highly safe products like glyphosate are under attack by activists citing a biased view of the literature. This is especially dangerous while court cases are being conducted and judges, not scientists, are deciding on if products like these are safe or not.

Trolling the environment? Count me in!😂

The beautiful circle of life.

good video, regards from north korea

no one ever believes me when i say the malthusian problem is still relevant

Wouldn't one have to expose the plant they want to make more resistant to pests, subjected to the pests that are harmful to said crops?

@EGCblackknight

5 жыл бұрын

Yes and no on that. You can expose crops to fungi and bacteria, and then select out the specimens that survive. Trouble with this type of selective breeding is it takes obscene amounts of time or just doesn't work, and can have undesirable side effects such as creating stronger bacteria and fungi. With insects this approach is not an option. Plants don't have immune systems like humans.

@jasminelarsonion8400

5 жыл бұрын

EGCblackknight Wow! Thanks for the answer \ (•◡•) /

You are not forgetting talking about the Periodic Table of the Elements nor organic chemistry and the petroleum age of chemistry, are you?

Union Carbide doesn't even accept their responsibility for Bhopal Gas tragedy.

Congratulation on 9M...........

❤️

Shpere

I fear if enough people are working to get us out of this precarious position, arising due to our dependence on few crops.

Oh yeah! Today’s lesson: how we learned to industrialize our crops and cattle and the consequences of such artificial breeding

That problem on the third hand is very concerning.

ouch harsh buzz kill. If he did the research first, published it first, and got the prize for it does that mean he should do what with it?

Hello

Why not GMO a crop that can take Nitrogen from the air?

Only video I'm actually educated on lol. Love it except the part conceptually that the planet is fragile. No it's not. Humans ability to live on the planet is fragile. The planet doesn't care if it's an ice age or 100 degrees but people do. The planet is fine the people on it, not so much

@jonathanthompson4077

5 жыл бұрын

Tell that to the increasing number of species going extinct. (Granted most of that is humans fault.)

@doomsdaysist

5 жыл бұрын

Jdtcreates but species will come back adapt and thrive like they always have. Humans won't necessarily

@miabua73

5 жыл бұрын

@@doomsdaysist The whole current biosphere of our planet is fragile. I think that's what they meant. The planet will obviously be fine 'til the Sun's slow death.

@robrod7120

5 жыл бұрын

Jesse .Sist I actually agree to an extent, eventually a few million years after a mass die off speciation takes hold and biodiversity explodes again. These cycles are obvious in our history; no humanly possible amount of carbon dioxide can change that. However, the current biosphere and the genetic diversity seen by near to mid future humans would be vastly decreased, and likely future people would be forced to fight back through genetic engineering or something of the like. We can never keep things stable forever, but we need to mitigate our impact to ensure we arent a destabilizing force.

@carposporophyte

5 жыл бұрын

Exactly. We'll perish some day and the planet won't even blink.

Man vs. Nature: The Road to Victory

YOU STILL HAVEN'T TURNED DOWN THE VOLUME ON THE INTRO!!!!

... on the third hand .... I like to say that too.

"bioshpere"

Hundreds of thousands of deaths due to the Chernobyl accident sounds vastly exagerated. The disputed range appears to be in the range 4000 to 60000 (not between 10s of thousands to 100s of thousands).

@testimonialicochique

5 жыл бұрын

Maybe he's including a possible number of people's deaths or early death that are not directly linked to Chernobyl, but have potentials to have been influenced by this accident. I think about numerous cancers, even across the Western Europe countries, where the radioactive rain were detected and some aliments were poisoned. It is impossible to count precisely, and also governments or medias often choose to minimized the gravity of this kind of situation. Considering this 100.000 do not sounds exaggerated to me. But who can really tell the exact numbers?

@ericschambion6838

5 жыл бұрын

@@testimonialicochique Aliments poisoned in Western Europe ? Where ?

So controlling nature hasn't been a total slam dunk for human kind...

Yessssss finally

can we learn some not rockefeller science?

The biggest tragedy facing the planet is pollution and if I had to narrow that down I would say plastic. If I had to narrow that down I would say single use plastic and the food industry is the biggest user. If you want to watch a good movie on plastic watch A plastic ocean.

bioshpere...

We are going to have to terraform Earth

11:30 The confirmed casualties of Chernobyl is something like 30 people, the crew of the plant itself and the firefighters sent into the reactor to put it out. And they can't really be called accidental exposures the people who ordered them to do it knew they were condemning them to a painful death, but did it anyway in the slim hope of being able to bring the reactor under control and avoid the international outcry. Also Chernobyl was intentionally running it's reactors hot as a part of an experiment and had very lax security procedures to begin with. Do you have any source for this claim of tens of thousands to hundreds of thousands?

I'm usually a fan of this series, but I feel like this episode missed the mark. The reason most famines are political in nature is because of the work of agronomists like Borlaug. When the supply problem of food is solved, the only remaining reason for famine is distribution, but distribution can't save us when there's not enough food to go around. If we had a system of "perfect communism" and subsistence farming, there's no way the world would be able to support the population that it currently does. Criticisms about mono-cultures, over-fertilization, and pesticides are quite fair, but I don't think the slightly dismissive stance this video took regarding agronomy is deserved. In my opinion, Crash Course Engineering handled this topic better.

Didn't India widely revolt against the green revolution after the chemicals destroyed their soils?

Warren Anderson managed to escape with help of Indian National Congress and later on lived a happy life which he shouldn't deserve being CEO of UNION CARBIDE. (Company that was responsible for the incident taken place in India)

Controlling weather is much simpler than cloud seeding existing storms. Weather is fundamentally just pressure systems, pressure is just energy, pump enough energy into the atmosphere in the right locations (creating a low pressure system) and you can manipulate the high and low pressure systems around the world, move storms and such where you want them.

First and educational

HaWt BoI

Hoped you atleast name some scientist other than borlough like M S Swaminathan from India etc though i am just nitpicking.

Trust the vlog brothers to find a negative with the green revolution

@aaronzook9540

5 жыл бұрын

I don't think any of the unintended negative effects Hank describes are at all controversial... And I don't hear him complaining about the fact that millions of people were saved from imminent starvation. I think the main point is that our technological interventions nearly always interact in a more complex fashion with dynamic systems than we anticipate. Do you disagree?

@mickmickymick6927

5 жыл бұрын

I wouldn't have enough data to be able to give an informed opinion on the question. From the tone of the video, it felt like Hank was looking for a negative to the saving of millions of people's lives in order to find a way to make the point he wanted to make. @@aaronzook9540

اللغة🔹العربية🔹موجودة طبعًا

first like thou

First from India😘

Can you mention Fritz Haber without hinting at his role in the development of gas warfare during the Great War? Before you can suggest we are on the verge of running out of plant based foods I think you need to talk about the contribution and cost of animal based protein. It's my understanding that (in most, but not all, places) we would be much better off if people switched to a plant based diet.

@ArawnOfAnnwn

5 жыл бұрын

We would, but...we're not going to. Unless calamity hits and forces it, it doesn't look likely that enough people are going to give up meat. Nowadays some of them are reposing their hope in lab-grown meat, whose sustainability is still unclear, just cos they'd rather not switch. And that's just among those who care. Sure vegans are a growing population, but it's still tiny. Meanwhile, there's a well-established link between increased prosperity and meat consumption. And since increased prosperity is every country's goal (and many countries current trajectories)...

@MakeMeThinkAgain

5 жыл бұрын

@@ArawnOfAnnwn I can't argue with this. I became a veggie in 1970 after the first Earth Day, but I haven't noticed many people -- even friends -- following my lead.

18st

@jaykatz9785

5 жыл бұрын

It's in Brazil now?

dammm thought i was fist

That table is sooo floppy

So, I guess we're not getting any development on Social Sciences :(

First to comment, only 4 views. yeah! like that matters.

we gotta move our farming indoors before we control the weather. 'coz other countries be like:" hey we have not moved our food indoors yet, wait up!!" and the rest of the world sighs, and I eat popcorn.

4 views and 14 likes wait that's illegal

@varana

5 жыл бұрын

@Ungregistered User But not commenting on that would mean 20% fewer inane and useless comments under every video, and we can't have that on the internet. :D

Neither did? Not in a usefull way anyhow.

If we stopped eating meat (especially beef) we'd be able to sustainably feed a much larger population. No doomsday-esque environmental engineering attempts required.

that's such a cheap mistake for a professional channel to make, your intro is some high quality / loud audio, and then the show itself is less quality / quieter. i think its bitrates or something like that.

NEVER did he articulate how economics affected farmers decision to adopt the industry trend of modern farming techniques. Biased indeed.

Sad that you are banning comments I guess that says something about trying to control the environment in itself.

So the solution for the biosphere that has gone bad because of the unintended consequences of engineering is geoengineering? Anyone else sees the dramatic logic flaw here? Can we engineer our way out of every problem? or maybe can we change the approach for more cultural/dietary/non-interventionist approach?