What is Climate Change?: Crash Course Climate & Energy #1

[@mohsin90ish]

Glad you're doing this but not looking forward to the comment section.

[@Argacyan]

Thus far looks fine, I think they're moderating the comments which every channel should do really

[@digimonlover1632]

Same here. All the climate deniers are gonna come out the woodwork.

[@Balleehuuu]

How have I (as a fan of "kurzgesagt - in a nutshell") found out about this channel only two weeks ago ... this is good, important, entertaining - I love it.

[@fietjefindsitfunny]

Oh you're in for a treat, pick a topic and dive down a rabbit hole. The Geography course blew me away.

[@Caterfree10]

This channel is utterly fantastic for this type of learning! Definitely worth picking any given topic they have here and diving right in! Biology, history, literature, and so much more and the quality is fantastic. :D

[@xx-knight-xx2119]

They make great content and it's not only about one topic. Been watching for many years. History courses were good for a start.

[@00Linares00]

My favorite is the Astronomy one, if you want recommendations

[@mortuos557]

history. all of them.

[@Gavolav]

Hope you guys will talk about nuclear energy in this series!

[@JackZeroZ]

I am afraid that they might take the hippie approach that talks a lot of negatives of nuclear energy but do not extend the same criticism to wind and solar. This unfortunately has been a common trend.

[@michaeljohnsen5436]

Based on their cited sources, looks like they will!

[@ithiusdomino]

Gawd I hope the stigma around Nuclear starts to die down, it's the best solution in the short term to our long term goal of renewable energy.

[@DrMackSplackem]

They won't. Certainly not in any honest fashion. They need the supposed problem to be as acute as possible, and are not interested in any mitigating tech. It's about the Benjamins, and that's all.

[@culwin]

Why wouldn't they talk about it? That would be weird.

[@connecticutaggie]

I am looking forward to the series. One factor I hope you also cover is how climate change choices are intertwined with other "crises" that people are also concerned about: Hunger, Information and Energy access, Plastic Pollution, Wildlife Preservation, Anti-Nuclear. Ex: Here in Oregon, there has been a push to eliminate disposable plastic bags (mostly) because waste and wildlife pretty much every other solution requires way more energy to produce than can ever be recovered. This is made worse because people that promote their priorities tend to ignore the consequences of their proposals.

[@Kit438]

So excited for this series!!!

[@johnwodetzki6326]

Crash course is so amazing at educational videos! Thank you so much John & Hank

[@TheAmericanAmerican]

I learned this all over 10 years ago back in college and I'm a little shocked that Crash Course has taken this long to make this series... better late than never I guess;) Regardless, EXCELLENT work!!! 👍👍

[@brookels66]

We can all do our part, even in small ways, to help our planet💚

[@ithiusdomino]

This series is already off to a great start, thank you for doing this.

[@ffff3_]

just started taking course about climate change on climatescience and now i also can learn it here! excited about this course!

[@akshanshjha81]

This channel just keeps making better topics Great work Crash Course!

[@katie42496]

I love the insinuation from the animation that doctor who made water happen

[@celestialnightfall2001]

Wake up babe, new crash course series just dropped 🥵

[@lars_larsen]

New things I learned today: While most scientists are merely people who study or have expert knowledge of one or more of the natural or physical sciences, good scientists nerd out about stuff. Great video.

[@ilanastout6611]

Yes!! sharing with all my science teacher friends :)

[@rexy21]

As someone from a place which has been facing and will face far more serious consequences of climate change while also having a relatively far low carbon footprint as compared to the leading nations and superpowers and economic beasts of this world, I highly appreciate the new series.

[@nerdyraven752]

I hope that this series also shines a light on climate-vulnerable countries such as the Philippines and Tuvalu.

[@EvenFlow391]

What if we binge-watched 4 hours worth of Crash Course videos? Jk...unless? 🥺👉👈

[@BethanyMyers-wy5md]

Can we talk about how cool that editing was with the volleyball at 3:42?? Had to watch it like 4 times cause I was so dazzled

[@TrekkieBrie]

I am so extremely excited for this series! I only wish it had been published a year or two ago when I was still earning my degree haha. I can already tell this would have been one of the most useful resources I could have had, so I hope others utilize it. Looking forward to seeing what topics you cover!

[@xchoo]

At 3:58 there's a typo - Infrared is missing the first "r".

[@crashcourse]

good catch, thanks!

[@0x0michael]

Combining climate and energy was really thoughtful, thanks to the team behind and the queen of ice pop

[@mikkosaarinen3225]

Thanks for another great Crash Course series. Also that's a really cool whale tattoo 😍

[@Kenziegh]

thank you so much . i designed it and tattooed it with Dr. M!^-^ I love shes joined my favorite series!

[@davidparker7216]

we totally need to spread this course like a Lil Nas X song

[@VinnieGer]

Oh yeah!! I’ve been excited about this all week!!!!!

[@iamdawnmwilliams]

I love this channel. I use it for homeschool lessons

[@Who-vt9oh]

I think the really critical point is that the global temperature has never changed this quickly before. Ever. It is completely unprecedented. That's scary.

[@rommelb497]

i wonder how they measure it.

[@gingerpickett6958]

@@rommelb497 I saw one video that mentioned buoys/measurement devices in the water. That might have been for measuring ocean temperatures. Apparently they used to measure the temperature from ships. For past climate changes, they can use ice core samples. I’m not sure what approach they use for times before the ice formed though.

[@captainwin6333]

@@gingerpickett6958 Ice goes back 800,000 years in Antarctica. Before that they can use soil samples from beneath oceans.

[@kimlibera663]

And you are thinking that because something changes quickly that makes it anthropogenic. Tsunamies develop fairly quickly in certain regions-does that make it anthropogenic. Actually for the record, since weather records began till the present, the accepted figure for the global incline in temp was 1.6. That's a small number.

[@kadaluarsa-316]

Full of references!! thank you crash course!!!

[@cpi23]

so happy this exists

[@Im-just-Stardust]

Thank you for making a series on climate and energy !!!

[@Student-gi4lb]

The volleyball examples, was an awesome props. 🤩🏐

[@trevinbeattie4888]

1:43 Point of clarification: the Earth is the only planet _that we know of_ that can support life. Of the thousands of other planets we’ve discovered, 55 have been determined to be _potentially_ habitable (as of March 2020.) The galaxy is estimated to contain billions (possibly trillions) of other planets, and we don’t yet have an idea how many of those could possibly support life.

[@adripdv]

Oh goody, let's trash this planet and then go look for some more to do the same.

[@ingilizcehazrlk9134]

Happy 4.5 billionth birthday to Earth 🌏

[@Nova-jj6ov]

Thank you for showing the blobfish in the water, instead of it abomination it becomes on land.

[@monomelonfn]

Crash Course has a bright future

[@Davlavi]

Informative as always.

[@Edward-lf7tl]

AHHHH!! So glad there's finally a climate change series. Thanks Crash Course!!

[@lakrids-pibe]

This is a big subject to tackle. I'm looking forward to this series. Any chance for a series about the history of Israel/Palestine?

[@AntrozLPs]

Awesome start! Maybe I'd suggest reducing the pauses between sentences, it stretches the video and feels slow compared to other CrashCourse series. But I am looking forward to new episodes!

[@tristan7216]

Never heard of Eunice Foote, looked on Wikipedia holy cow she went to my school! Cool. Here from PIMA so Mr Green did some good marketing there 😊

[@aleehyder3153]

Try to add subtitles in the videos It would be beneficial more for everyone.

[@mehwishaziz193]

cannnot wait for more videos in this series

[@ACombatWombat]

Looking forward to more videos on these topics! Thanks, CrashCourse!

[@mawkernewek]

7:24 You make global warming sound more fun than you probably should!

[@Zirkusman]

Thanks for the video!

[@SnakeAndTurtleQigong]

Thanks so much!

[@virginiathomasakaicedragon6579]

I love that you had doctor Who pass by in the Tardis

[@fatimhmdi]

It's interesting and the tone of the speaker is gentle and appealing, i like it

[@zobadanaher4920]

Really great video. Thanks❣👍 This helped me finish my science report on climate and weather.

[@NdeebwaKW]

Honestly some of the best content on KZbin. Lets hope y'all address the lifestyle vs population false narrative. Its fully down to lifestyle. and i really hope yall do make sure to call out the different levels of input from differnt folks.

[@HaldaneSmith]

I'm not sure what you mean by life style but it implies that individuals must sacrifice income in order to reduce climate change. But deploying solar and wind for utilities, heat pumps for heating, and EVs for driving won't reduce income. Those are technology choices. We need to deploy existing solutions and find better technology for things that don't have cheap substitutes: aviation, shipping, cement, steel, battery backup for electric utilities (e.g. hydrogen extraction), beef substitutes, and direct CO2 extraction. How much consumption we must sacrifice depends on how well we develop and deploy these technologies.

[@shivabalannagakumaran6019]

I really like that you're finally doing a Crash Course on Climate and Energy. Keep up the good work CrashCourse!

[@Tristan-mr3pk]

I’d really like to see the deep science behind all of this.

[@michaeljohnsen5436]

They included a complete list of sources for the whole series in the description: docs.google.com/document/u/0/d/1rRJ-L9TLNfPwPfzn3LdjDEw-wHtThwTfDUe2rDtFXQQ/mobilebasic

[@justwannabehappy6735]

Good news. You have access to the internet! ?

[@culwin]

It's called "Crash Course", so I'm betting it won't be "deep" enough for your liking. Luckily, there are a zillion sources on the internet you can easily look at.

[@Shalom64221]

Ahhh! So happy about this series. Thank you Crash Course!!

[@angelicam.alcantarao.748]

I have to say after my two favorites crash course playlists (Astronomy and Geography), this one will be like the cherry on top!!! Thanks to the Crash Course team!!!!!😁

[@SomeoneNamedNatasha]

I LOVE THIS TOPIC‼️thank you sm :) I learned a lot from thos

[@ericthelemming]

thank you for making this video series! 🌍💚

[@Teo117]

I love this!!!!!

[@jds1vette]

Hoping to live long enough to see Florida under water.

[@shahidnaeem7941]

Excellent 👍 Work

[@Oh_ELCapitan]

I'm here for cc

[@ahronrichards9611]

It's good to see that CrashCourse is finally making a series on climate change. And M pointed out some serious points: smaller countries (like St. Vincent and the Grenadines, my home) which are generally low carbon emitters, pays the price for the emissions of the larger countries. Increase in storms, hurricanes, serious infrastructural damage, droughts that affect crop yields and even death (13 people died in a freak storm on Christmas Eve 2013) and I can continue. As SIDS, we do not have the access to financing to adequately recover from these events or upgrade our infrastructure accordingly, as we are deemed middle-income countries. So we have to borrow more just to keep our countries afloat. While COP27 announced financing for smaller countries, no mention was made on decreasing emissions (as far as I can recall). So just some things to consider. Looking forward to the next one.

[@themarissasofia]

Hi there, Crash Course! 😊👋🏼 Climate change is a wonderful addition to your informative KZbin episodes. Thank you kindly for sharing topics important as this one with viewers like myself across KZbin! 😁 Wonderful job to Em Jackson for executing this video professionally! 👏🏼

[@Ront1313]

Question regarding the relation between the the greenhouse effect, the increase in global average temperatures, and the increase in greenhouse gasses in the atmosphere. How sure can we be about correlation equating causation (that is, greenhouse gas emissions being the main driver in rising average temperatures) in this instance and why?

[@jamesgarner667]

The video explained the science behind it. Its a proven experiment

[@Argacyan]

Earlier than that point, the video had already given a very oversimplified intro into how: Chemical components have different properties. If we change the chemistry of an atmosphere we change its properties. This was theorized for a very long time & first experimentally proven in the 19th century in various experiments including those around examining artificial micro-climates. With an increase in greenhouse gasses (here in the video the specific experiment mentioned was testing the properties of a CO2-rich atmosphere) heat trapping can be observed and we can continue to reproduce those effects. As someone with a geology background I can also tell you right now - and maybe the series will go into that in future episodes some more - that the rock under your feet would not make sense without chemistry working as it does. Things like glacial ice cores are one thing, but layers of rock & sediments are another climatic archive from which you can derive past climatic contexts among other things such as the earth's magnetism.

[@abramrexjoaquin7513]

Just know... That even the temperature increases. Our planet will LIVE on. Life here will move on. We may become extinct with other animals on it. But this planet will go on. So. Tell me. Is it a climate crisis or is it a FUTURE LIVING crisis? A future living that we can still recognize today. We're on that precipice. You know that moment in human history before written language existed? We're in that now. Similarly that lifestyle change... Will be incomprehensible from what we know now.

[@Ront1313]

@@Argacyan Thanks for the answer! But it doesn't answer my doubt( it's isn't about how the rise in greenhouse gasses ends in global warming, but how do we know that the rise in gases is the main reason for the change in average temperatures). Should have been more specific, changing my question! Thanks a lot!

[@KitagumaIgen]

@@Ront1313 In the most fundamental steps: 1, Earth is at thermal steady state in the sense that the same amount of energy absorbed from solar radiation is re-radiated back into space. 2, the radiation in is mainly in the visible and near infrared part of the spectrum, while the thermal radiation out is in the far infrared part of the spectrum. 3, without atmosphere the temperature would be some -10 -15 degree C. 4, The atmospheric gases, primarily H2O, CO2 and CH4, are heated by the IR-radiation it absorbs, and they re-radiate both up and out toward space and back down towards earth. When the amount of green-house gases increases the radiation escapes the atmosphere from a higher altitude. Due to the temperature structure in the atmosphere (neglecting the heated stratosphere for simplicity, which is OK at this scope) this leads to a higher temperature on the ground. 5, this radiation-transport is very well understood on this scale, the absorption characteristics of the gases are very well understood. 6, given that we have measurements of increased green-house gas concentrations we can robustly calculate how large temperature increase this leads to all other things equal. That is how we know.

[@gmsherry1953]

1:50 "our habitable earth -- the only one out of the thousands of planets known in our galaxy where life like ours can survive" is misleading. More accurate might be "the only one out of all the planets in our galaxy where life like ours is known to exist." We haven't determined that none of the exoplanets discovered so far can support life like ours. Some of them may be supporting life like ours and we don't know it yet. It's almost CERTAIN that SOME exoplanets (perhaps not yet "known" i.e. discovered) can support life like ours. You are implying certainty that the answer to the Drake Equation is 1. That may not be exactly what you said if it's parsed legalistically, but it's what it sounded like.

[@air1fire]

This is the first crash course video in over a year that I INSTANTLY clicked as soon as I saw it.

[@youssefmosleh9547]

8:53 so like 30% faster than before the industrial revolution

[@nateweinand4209]

This is going to be a great series! Excited to learn more!

[@theman83744]

Interesting, can you make a video on decoupling the increased sun activity and effect of co2 levels in the air on the climate?

[@gingerpickett6958]

I believe sun activity has been decreasing (sun activity meaning the amount of sunlight hitting Earth). If we hadn’t dug up all these fossil fuels, I wonder if it could have caused an ice age in the somewhat near future (through positive feedback loops). Interesting stuff.

[@joycejeong-x4b]

Public-private partnerships expedite the implementation of sustainable initiatives, pooling resources and expertise to amplify the impact of environmental conservation efforts.

[@shahidnaeem7941]

Outstanding Video

[@davidcolson1900]

Great introduction to climate! Definitely need to get into the carbon cycle to fully explain global warming. Hopefully they'll talk about the leading solutions as well: biochar, and direct capture.

[@tippusulthan1205]

y not create a series on everyday science

[@EuropeanQoheleth]

Methinks M is Canadian.

[@kayleybreslin877]

I am so excited and grateful for this series!

[@13loodLust]

Good! I'm early enough in the comments section where I can still grab some popcorn first.

[@shahidnaeem7941]

Love from Pakistan

[@daveladner]

TARDIS SIGHTING! (Fezzes are cool. I wear fezzes now!)

[@justwannabehappy6735]

I just can't wait to see all the comments from the climate change deniers.

[@waynewestlake3997]

I wish I could get a friend of mine to watch this series or at least even this single episode. While not a denier that things are changing he firmly believes (yes, from watching lots of Fox News) that humans have zero impact and therefore there's nothing we can do to change it. Quite the cop-out. He didn't take much of any science in school or college and is only business focused. Unfortunately taking responsibility for climate change has costs, but as this series will no doubt point out, NOT taking responsiblity also has costs. Though those costs will mostly be paid by future generations. I, me, everything, here, right now, screw everyone else and it makes no matter in the future when I'm dead is the life philosophy of far too many people. 😔

[@mpaul4584]

The only problem with climate change is the colossal amount of money it's going to cost to try and prevent something that we have little or no control over. A nice little earner for the mega greedy already invested in so called green energy. How does 415ppm co2 cause climate crisis when 6000ppm during the Cambrian period did not?

[@Chamelionroses]

Will humans adapt where there is often issues of poverty or worse? We shall see as population grows

[@LeonardoFFloresTruth]

Save Soil Please

[@joshbobst1629]

I don't understand the connection between higher climate Temps and extreme weather. Weather is caused by temperature gradient, isn't it? If the entire planet is uniformly warmer, where is there a larger gradient coming from to cause more extreme weather?

[@suhasiniagrawal9569]

Was that the TARDIS

[@Elian22]

6:18 💀

[@oliviergahungu5787]

In Africain it our great problem.

[@Mantic0reIlluminati333]

What happened over the years

[@HaldaneSmith]

Besides the ice core data, another way scientists know that CO2 causes global warming is by measuring infrared radiation in the lower and upper atmosphere. Satellite measurements in the upper atmosphere show less infrared radiation than in the lower atmosphere. Infrared radiation covers a range of frequencies and only a subrange is missing from the upper atmosphere infrared radiation. This subrange of frequency values are the frequencies that CO2 and methane block. That's strong evidence that C02 and methane are blocking the infrared radiation and, thus, warming the lower atmosphere. And the upper atmosphere is cooling which would not be the cae if the sun was causing global warming. Please mention that in one of these lectures.

[@cutezoo4994]

👍👍👍

[@garyfrazelle261]

Most don't see a connection with Earth. Like we are separate. The truth is the Earth will be fine. We will not be. 10 minutes of this video is speculation on a history or future we will never know. Humans.... what are ya gonna do?

[@PhilRable]

Just a thought to help people understand what’s happening to our climates. Rather than describe what’s happening as the earth heating up, describe it as extreme climate variability caused by an above average increase in solar energy trapped in the atmosphere and oceans which, when released as weather, powers the extreme events that are occurring more often. Then the doubters can’t use extreme cold snaps and wet periods as proof the earth isn’t heating up? It’s more complicated, it more accurate.

[@vajtsim8937]

Only 12 years left...🤣

[@sixvee5147]

May the Anthropocene epoch make the Permian-Triassic extinction event seem like a minor footnote in the pages of Earth's history. Here's to making scenario SSP5-8.5 of the IPCC assessment a reality.

[@DarkOracleOfDeath]

Please popularize the name Climate Change rather than Global Warming. People won't "believe" in Global Warming as long as we still have cold weather, so Climate Change makes much more sense.

[@pandzban4533]

The definition just killed me in the very first minute of the video. It says "climate change" is purely artificial problem. I thought science deals with prediction of what nature is does?

[@mihailghinea]

By "shifts in agricultural productivity", I presume you mean better yields, no?

[@punki2291]

It depend of the yields. Hotter temperature cause more water loss for plant some have more resistance.

[@meandyouagainstthealgorith5787]

No. The most agriculturally productive land in the United States was in the state of Arizona. Arizona was always limited only by the amount of water available. Crops, such as cotton, could be grown in the summer, and the yield was fantastic. The greatest in the world. Further, crops such as lettuce, could be grown in the winter. Today, southwest water is being sold off to residents, and it happens to be the only part of America drying up. While pipelines could be built, and sea water could be desalinized, this will be deemed as expensive because people in the southwest want their real estate to be expensive. It's a profit motivation, and not a productivity motivation. Land to the north will never be as productive, but we will be able to make do with further investigation in plant genetics.

[@MeatPops]

CO2 is not the only thing required for plant growth. Plants will only photosynthesize within certain temperature ranges, for instance. Also, multiple studies have shown that increasing CO2 lowers the nutrient content of plants. So while in a greenhouse environment extra CO2 can contribute to extra growth, that is also a temperature and moisture controlled environment.

[@AndrewGillard]

"No" is correct :)

[@obscureinception8302]

No. Some regions can expect to see better yields of some crops, or become better suited to certain types of livestock, but other regions will see reduced yields. In many areas it might be necessary to change the type of farming, and what is produced. Other areas might see most agriculture become unviable, while areas that are currently poor for agriculture might become highly productive.

[@bigredracecar27]

I was really skeptical of climate change before this video but now I believe

[@coloneljetski5485]

“Hi hi?” What’s with that?

[@adrijobecq]

But it does have an easy solution. Stop neoliberal policies that promote overconsuming and invest in renewables and nuclear power.

[@hiz-n-lowz1577]

chill out guys, I studied this topic in great detail, co2 is plant food