Anyone watching in 2024

Anyone else here 7 years later for online classes?

@llp7722

4 жыл бұрын

Any1 else hate bts

@Alyssa-wz8mx

4 жыл бұрын

😂

@stellac8160

4 жыл бұрын

yes lol

@derpyderp1144

4 жыл бұрын

Ye

@3amigos949

4 жыл бұрын

BTS Lover29 hahaha yes

_"Tina here. If you have no idea which one's are the 5. here!"_ Deforestation 5:37 -6:55 Desertification 6:56 -7:41 Global warming 7:42 - 8:44 Nonnative species 8:54 - 9:20 Overharvesting 9:21 - 9:42 _"If I am incorrect, tell me! Like if you want everyone else to see this!"_ EDIT: _"Guys I know it's in the description but not everyone checks that, so here it is in the comments."_

@edgarn8084

4 жыл бұрын

FriskPony you’re the goat🐐

@stellac8160

4 жыл бұрын

omg thanks so much

@davidsarpong8042

4 жыл бұрын

your a life saver thanks so much :)

@jadeemerge3770

4 жыл бұрын

tysm now i can do all my work lmao

@isabella-em3rt

4 жыл бұрын

life saverrr

wow this video has been up for 10 years , and we're living out everything he's explaining. At greater rates.

Hey! Biology teacher here: I always enjoy your videos, Hank, but this series on Ecology has been my favorite! Your masters in Environmental Science shows through your passion.

@babbletron8730

4 жыл бұрын

hey ben its me, jack. I think you are stupid and should stop teaching.

mann this is awesome. I admire how passionate he is.

The key is "few hundred thousand years." As he says in the video, the things we have been doing and the things that are happening are taking place at an astoundingly fast pace.

can we get a whole separate segment for environmental science?

@sunitamahadik7746

5 жыл бұрын

Find out more about

@awesomeloren8174

4 жыл бұрын

YESSS

@markocegn452

4 жыл бұрын

hello MJ Lock I saw your comment and see that you care about the environment and the climate therefore I wonder if you are open to see what we do and help us together do something concrete to improve the environment?

Imagine watching this again and realize that the Amazonian Forest is almost gone due to extreme wildfire. And imagine how many biodiversities were eradicated due to that phenomenon.

@chococookies4

4 жыл бұрын

The plants will grow back due to secondary succession. The plants always get replaced, but the animals are who I am grieving for.

Who else has to watch this for there biology class?

@rex7248

8 жыл бұрын

what are you talking about everyone here is from trigonometry

@josephmorgan1595

8 жыл бұрын

Oh.

@Moni.moni98

8 жыл бұрын

+Eevee in a hat (Nature Mage) Me lol xd

@user-qw1xe1fj8y

8 жыл бұрын

me~

@josephmorgan1595

8 жыл бұрын

:3

these last three are the best in the series! thanks for all the work yall do @ crashcourse, love yall!

People who don't study Biology or Ecology should be required to watch this video

@amylowis4595

8 жыл бұрын

+COOL GUY111 in defence of myself, this photo is 3 years old

@theguywholovespie2118

8 жыл бұрын

+Amy Lowis They should be required to watch it every day for a month.

@theguywholovespie2118

8 жыл бұрын

How about... no. :P

@amylowis4595

8 жыл бұрын

Hey woah calm down everyone

@theguywholovespie2118

8 жыл бұрын

Amy Lowis RUN WHILE YOU CAN!!!!! XDD

This is an amazing video and I'll surely watch this again. The part when you show the deforestation in the Amazon rainforest was kinda sad to me, since the majority part is contained within my country.

Its my Bio 4 exam on Friday and this show is so helpful for revision, im lucky to have it at the same time as my exams, thank you John and Hank

Thank you for this 'basic' education on the problems that we (humanity) have caused. WE ALL NEED this info to understand the problems and, their poss solutions. PLEASE keep up the good work ! Keep spreading the news and, assisting mother Earth in such ways. TY !

Wow, this is such a great video. I learned that humans have caused so many problems to happen such as littering, cutting trees and etc. If we had to do what the environment does for us as of today it would take us longer and a lot more time. The ecosystems are a combination of old and new things that create the environment we are in as of today.

I enjoy crash course videos more than other videos when learning or reviewing for things that they also happen to cover

this needs 8 billion views.

@akshayrathore2882

9 жыл бұрын

or just 'muricans. no one else is debating global warming

I'm addicted to these videos!

@zhongliangcai602

5 жыл бұрын

Ezra Grant , I only watch these because my mom tells me to XD.

Lmao definitely another depressing yet entertaining and insightful episode of Crash Course. Thank you Hank!

FACT: If all humans stop breathing, Earth will be saved.

@supaboi9

4 жыл бұрын

God: Oh my god! Why didnt I think of that!

I wish everyone would watch this video. People don't realize how dependent we are on the environment. A lot of people think humans and nature are separate but that isn't true at all.

@user-fi5fd2ky6e

8 жыл бұрын

that is right. im sure alot of people know it is just that they dont have a reason to care...

@jessieclass741

8 жыл бұрын

True

@ishouldbestudying251

8 жыл бұрын

+Jessie Class Did you write this comment just because your teacher told you to?

@jessieclass741

8 жыл бұрын

Not at all. I wrote this comment because it's my honest opinion. I didn't even watch this for school, or because anybody told me too. I watched it because I honestly care about the enviorment.

@ibizanhound7891

6 жыл бұрын

Vegan Gains Actual Father What are you even talking about

All of these things are important for people to know whether you are a student or teacher. We have to be aware of what we are doing to the environment, for the long haul.

@Shimamon27

7 жыл бұрын

And how do you propose to make people care about anything other than their massive endless privileges? They want MORE not LESS. They will never give up their Hedonism, until there is nothing left to eat, and then they'll all enter into massive mental instability, and start killing each other by the masses. It'll be total carnage, and nobody will learn anything from the whole event. End of story, everybody loses.

@sonokoluvr

4 жыл бұрын

Mindeer it’s the sad reality

Tom. Iam having biology exam and u really helped me in taking few IMP points that may help mee.. Really thank u ❤️👏

SAVE A COW, A FEW TREES, AN ECOSYSTEM. GROW A POTATO.

@Shimamon27

7 жыл бұрын

A kawaii potato~~~

@theguywholovespie2118

7 жыл бұрын

If you insist...

@Shimamon27

7 жыл бұрын

***** :3

@jacobkleeman5708

7 жыл бұрын

i like potatoes

@uvraged9854

7 жыл бұрын

I do grow potatoes.

I love these Ecology episodes! It reassures me that this is what I want to do with my life.

"Thank you for watching another kind of depressing video of crash course ecology." 😂

watching all these from New Zealand. The presenter is awesome.

Thank you so much for this video!

Thx, really helped me with my homework!

I feel like I need to mention that there are already logging restrictions in the rainforest. Nearly all the trees we use for lumber are grown on tree farms. The people cutting down trees in the rainforest are low income native populations who are trying to make farms and grow food for their families. If we help those people with better farming technology, less land will have to be cleared.

thank you for helping me this year in biology! human impact is my last test this year, wooo!! i’ll be back for my final next week

Thanks for bringing youtube the best/most needed information out there! Cheers!

My University should be cutting you a check bc my professor literally quizzes us on your videos

And in August 2019 this video becomes incredibly sad that 6 years on we watch the Amazon being burned due to agriculture and our obsession with consuming meat/animals. We never learn and therefore deserve the extinction we are bringing on.

Great Presentation, Thank You, please keep educating for all our sakes.

Would you be able to make a video on the possible mitigations or human interventions that can help the ecosystem, the benefits this could do or the harm it could possibly do?

i loved your video...i think the world needs more people like you...thanks a lot

When you said "we could never ever ever duplicate" my mind immediately went "getting back together."

In the midst of these walls of text, I would like to say I love this man's voice.

@Nt3Hr

4 жыл бұрын

Hi its 7 years later its 2020 now

"why is this stuff turning the earth into sausage" XD. XD. XD

@gaming_with_coral1705

4 жыл бұрын

Masiel Delacruz that’s so funny XD XD 🤪😂🤣

@miraculoustalesofobliviousness

4 жыл бұрын

right?!?! like, i thought i was the only one who laughed out loud for that!!! XD

really liking it your videos!!!! Thanks a lot for uploading such nice videos.

Crash course is awesome! Keep rockin’! 😍❤️❤️❤️

Thank you for your videos...You got me through biology... Grade: A...Now I need you to get me through environmental science...core concepts of John Muir, Rachael Carson and Charles Darwin...If you can recommend certain videos to me --I would greatly appreciate...

haha awesome you guys did this so well :)!

This isn't depressing! Not for me at least. It gives me a better understanding of these problems. And I NEED a better understanding. Please, please, please! Make more in depth videos about this subject!

Really clear and appreciating explanation

Good idea on this two-parter! Thanks

How does he talk for 10 minutes straight and keep his cool? I could never do that.

@philiphan2145

7 жыл бұрын

you do know that the video is edited right....

@simoncolson6664

7 жыл бұрын

nope he didn't

@austinbevis4266

6 жыл бұрын

Jump cuts

I went to Humboldt State University to study Environmental Science, and this is incredibly dumb... At 0:25 he says that human activity "could be" responsible for the extinction of "nearly" 1,000 plant and animal species in the last 100 years. The real numbers are way higher than that. "Scientists estimate that 150-200 species of plant, insect, bird and mammal become extinct every 24 hours. This is nearly 1,000 times the “natural” or “background” rate." Don't get me wrong, crashcourse makes some really cool stuff, I've seen it... But this guy made a 10 minute presentation on environmental science, and within 30 seconds he shows that he fundamentally misunderstands the magnitude of the crisis he's talking about. We're not just cutting down a few trees and changing the temperature a bit. We cut and burn 40 football fields of trees per minute. We redirect so much water and till so much soil that we have created deserts the size of countries. Misinformation like this makes me furious because it makes people think, "well if only 10 species a year have become extinct over the last 100 years, then maybe this is something we can solve next year if we just try a little bit harder. I'm sure that environmental group or whatever has it on lock..." People need to understand that by doing as much damage as we have, we have committed ourselves to fix it, and it's going to be expensive and controversial and it's going to take decades, and if we don't, this extinction event that we've created will continue to spiral out of control, decimating all the most beautiful things we know and love or want to discover. Want to know what happens when you cut down a very old tree? Here's a tree centuries old, and looks nothing like the other trees around it, and covered in a strange moss, and sweet smelling purple flowers. Only one species of bird in the forest is adapted to suck nectar from these flowers, touting a ridiculously long and otherwise impractical needle of a beak everywhere they go. When this tree falls, its flowers become extinct because they can only grow on that particular tree. The birds return to find the tree and its flowers dead, and they too become extinct... and the bugs that can only survive on the feces of the birds, and the fungus which only grows on the corpses of the poop eating bugs, and the bugs which only eat that particular fungus, and the spider which primarily eats the fungus eating bugs, and so on. The effects ripple through the forest, and hundreds or thousands of other species become extinct because of the felling of this one tree. You guys need to understand... We can't keep doing what we're doing and expect everything to be okay. Everything we love came from the rainforest- Chicken, bananas, strawberries, corn, wheat, prozac, marijuana, cocaine, opium, coffee, the list goes on- basically everything good comes from there, and what most people don't know is that's just the tip of the iceberg. We have yet to discover so much amazing food and medicine that exists in the rain forest, it would be a shame to lose it. Of course the rest of the world is also in jeopardy, but it isn't nearly as valuable, and I think this is the end of my soapbox. Look elsewhere for your education.

@theguywholovespie2118

8 жыл бұрын

YOU TELL 'EM

@tarnyred1793

8 жыл бұрын

Maybe he meant "thousands".

@karimtabrizi376

8 жыл бұрын

I think if people at least know the situation we all face that's a start. But if we idiots like Trump etc and OZ PM who deny this is an issue we are on a downward spiral.

@apearl420

7 жыл бұрын

Alec Thornburgh totally agree with you. We need to change our lifestyles and paradigms. Science and EIA should come before policy making but unfortunately it doesn't. Ex: the massive tar sands in Canada one of the worst planned irreversible environmental damage in the world under the Harper government.

@noahreed9091

7 жыл бұрын

Dang, this was more informative then the video itself.

my 14 year old kid just started high school about a month ago and she has a environmental science class and she loves it

Good presentation... "We cannot segregate the human heart from the environment outside us and say that once one of these is reformed everything will be improved. Man is organic with the world. His inner life moulds the environment and is itself also deeply affected by it. The one acts upon the other and every abiding change in the life of man is the result of these mutual reactions." -Shoghi Effendi, Baha'i Faith

In Poland we have increased the total area of forests from 20% to around 30% since WWIII. So it's possible to do something good for the climate and quality of living while still being able to make good profit out of it. For an example, we make a lot of furniture for Ikea. Currently we're having problems with overpopulation of boars (300,000 of them) so reforestation is not only good for wood but also for food... =)

@koofaya

9 жыл бұрын

***** Yes, because we went to the future, seen all the shit, came back and planted loads of trees!

@laramads5101

6 жыл бұрын

WWIII? You from the future or something? XP

@beatrizfitz8061

5 жыл бұрын

Nerd

thanks , this video helped me a lot on my project in school !!!

And around the 4:30 mark, not only is biodiversity important, but functioning ecosystem cycles are also important. Gotta have all them carbon, nitrogen, and water cycles working together on top of high biodiversity for a fully intact ecosystem!

I had to watch this for homework. I get what he is saying, but I almost fell asleep and I was counting down the seconds until it was over.

Excellent series!

I always thought desertification was when you got to the end of a meal and they brought you dessert and you where happy. Desertification.

Great intro! Thanks!

This channel is great!!

Hank, you mention cattle as the primary cause of deforestation (in the Amazon and globally) and desertification. I've been wondering if you're vegetarian. As a biologist, you know the industrial meat system is the single largest contributor to greenhouse gas emissions, deforestation, desertification, ocean acidification, use of petrochemical fertilizers/pesticides (for animal feed), use of arable land & fresh water, and the bulk of environmental problems we're wreaking upon this earth. As one who has studied psychology, why do you think people are so opposed to switching to a more sustainable plant-based diet? There seems to be a lot of resistance.

@makaylamarshall9743

5 жыл бұрын

Zortron culture, and it’s a really big overhaul to change one’s diet. I’m three years in still trying to change my diet and be primarily vegetarian

I'm in university and I catch myself watching his science videos for fun....:p

You're phenomenal Hank, thank you for the CrashCourse. You made it all easy to understand =D Every little bit of effort helps. Will you make a video of ways we can help the Ecosystem and Climate. Thanks...

this video was made 6 years ago and I'm just now learning about it

I wonder what it's like now if this was in 2013. Also, who else is given an assignment with this for geo?

I love this thank you for your time and effort

@gaming_with_coral1705

4 жыл бұрын

I think I spelled that worng

Thank you for helping me right my essay.

Great video!

thanks this is going 2 hlp me on my report.

@Nt3Hr

4 жыл бұрын

Cheese Whizard what did u get on ur report

please make a series on engineering!! :)

Thank you veeerrrrry much You saved me ... I didn't understand this lesson in the school and we have term exams tomorrow Thank you again

Very nice stuff.

6:06 so true 😂

My teacher showed this video in class. It was good.👍

@thechloeproject3514

8 жыл бұрын

Just in case you want to know it's a 6th grade class.

@erika-wp4ft

8 жыл бұрын

Whut. I'm Year 1 and teacher also showed this in class.

@claire5823

7 жыл бұрын

...year 1?

@keii2596

7 жыл бұрын

The Chloe Project 😂

@keii2596

7 жыл бұрын

The Chloe Project 😂

Excellent video! Gotta show my kids!

Farmers and ranchers are perhaps one of our best and strongest advocates for environmental protection (in Canada, Alberta is considered 'dirty' for its oil sands, and yet it has some of the strongest environmental laws around other industries because of their heavy farming). The trouble with ranching is, as Hank mentioned, overgrazing. Regular farms keep plants in the ground, while overgrazing can result in no plants in the ground AND heavy hoof traffic, a dangerous combination if not managed.

Brilliant video!+! "When I say 'effect', I don't mean in a good way." Hah hah hah. Yes, this video is definitely depressing, but it motivates us to fight these changes as much as we possibly can!-!

It's nice to be surrounded by happy plants and critters doing their 'business'... sure Hank, if you're into that? o_O

@LerriHelion33333

9 жыл бұрын

Maan Meher Grow up.

@KoriKosmos

9 жыл бұрын

Lucas Hollands Do you honestly think that I care, its been 6 months and 8 days since I made this comment. Get a life before commenting on old posts.

@LerriHelion33333

9 жыл бұрын

Maan Meher I'll comment on whatever post I bloody well choose.

@KoriKosmos

9 жыл бұрын

Lucas Hollands Sorry, are you still there?

@LerriHelion33333

9 жыл бұрын

Maan Meher You have offended the culture of my people.

Very nice.. love the links to the right ... neat

you are the best!!!simply amazing

What I learned: cows ruin our land

@kalexambing2507

8 жыл бұрын

You should watch Cowspiracy. I think it's on Netflix.

@Official_Doge

8 жыл бұрын

+Kalexambing I need to watch food inc. too. I think we need to get rid of BPA and petrol based plastics, they're developing plant based biodegradable plastic

@apearl420

7 жыл бұрын

Doge no humans ruin everything.. cows do not originate from Americas they were transported by Europeans

@Official_Doge

7 жыл бұрын

apearl420 no I agree with that, since we domesticated cows lmao

@noahreed9091

7 жыл бұрын

Eh, "domesticated" is a little far. If I kidnapped a bunch of wolfs then made them do my bidding, is that domesticating them?

I love these. Yes, they're a bit depressing but at least I'm informed on the shit we're doing to the world.

It's scishow dude! Thanks science teacher!

Awesome !!💕

Im seeing this in a class :D

I think everyone in the entire world should watch this video. it's really sad First Nations came here 25 000 years ago, no TV's, no Computers, no picky eaters or anything. Pure Masculinity. Now, we, humans are single handedly destroying this world and not giving a damn. We should be ashamed we're abusing our intelligence for more landscaping. Don't even get me started about Asia. I know they want to have a son, and it's their religion but honestly we need to start not having children

@chronofusion

10 жыл бұрын

LOL. ok I'll put it just like George Carlin put it. And THINK for a second when you read this next statement WITH COMMON SENSE...mathematically...chronologically and historically. " The EARTH is NOT going anywhere. WE ARE.lol. This planet has been here for over 400 million years. Humans have been on this planet around 200 to 250 thousand. Do the math. This planet can shake us off like a mild case of fleas anytime it wishes. Earthquakes, tsunami's, hurricanes, tornadoes are all ways in which it does it." It cracks me up everytime I here people bowing down in fear thinking they are afraid they are effecting the lifeforce of this planet when we can't even combat against the planets methods of killing us. Some of us have the nerve to think we are a threat to this great 10 thousand mile wide ball of gases, and soil.

@jennykapau4845

9 жыл бұрын

chronofusion We are direct and indirect threats to innumerable living things on the planet; and some of us care deeply about them, in addition to how those changes will affect our species. I typically love George Carlin, even saw him in concert; but I hate it when people use that bit of his to mock the legitimate efforts of those of us who care deeply about life on this planet.

@Aditya-wc9sw

7 жыл бұрын

it's becos of some religion which wants to be the highest followed in he world Cough Islam cough

Great video Hank! To to the people calling him an "alarmist": it's called facts. People get all worked up over the economy, over healthcare... so why not the environment? There are just as many problems, if not more, that have to do with the environment. Frankly, the environment is the root of the poor economy, poor health, and almost everything else. So yes, you should be alarmed. You should be scared. And you should be excited to create solutions and care about your home.

You know they're brothers, right? They've been doing vlogs for the same amount of time and we're both instrumental in creating thin series. If anything, Hank has done more for Crash Course and Sci Show than John has.

A recent thing I saw going around Facebook ... you show someone from the past an iPhone and say "With this device I can access entire libraries of knowledge from out of thin air ... and yet I use it to look at pictures of cats and get into arguments with people I will never meet."

Cowspiracy

@Shimamon27

7 жыл бұрын

People are going to exterminate life on earth for the sake of their flesh-craving tendencies.

@user-jb6qb8ki7e

6 жыл бұрын

Cuntspiracy

@rationalpsychopath8181

6 жыл бұрын

+Данила Пахомов suuuuper mature

@user-ok7nw3hd4k

6 жыл бұрын

LOL

@victorialaine4676

5 жыл бұрын

I've been trying to get my family to watch that for a long time.

i really like this cuz it helps us what to solve any problems that our environment face

My lazy professor linked our class to this video as well as other videos.

The environment is so strong yet so fragile.

@fancymushroom.

10 жыл бұрын

the environment is strong, but humans are way more stronger than our environment could ever be...

@someone-ou3ht

6 жыл бұрын

ecosystem is perfect and the imperfect humans are destroying it's perfection

Overpopulation is a big problem but human being can be so selfish. I remember I red in a Christian channel in Spanish promoting having lot of kids. He says that the population is so small that the entire human being specie could be living in Texas. Could you imagine a church leader so ignorant being follow for so many people? It's embarrassing.

@sciencenotreligion5607

6 жыл бұрын

Naom Chomsky was right when he said the Republican party is the most dangerous organization in human history..and no one knows history like Chomsky

@Jack-zy6ik

5 жыл бұрын

science not religion

@WadcaWymiaru

5 жыл бұрын

There is no overpopulation...

Hank & co - please please please do a video on what we as individuals can do to reduce the negative human impacts on climate change, be it by wasting less, changing habits, getting out and campaigning or whatever. I try to do as much as I can but I often feel I don't know enough about the related issues to act effectively, and I'm sure your knowledge base could provide some very helpful pointers to us all ^_^

There is applied research that suggests significant grazing isn't damaging in all cases. In fact the lack of sufficient grazing herds can degrade the environment. I have linked a TED talk regarding this below. ted.com/talks/allan_savory_how_to_green_the_world_s_deserts_and_reverse_climate_change.html

this guy is kinda savage- nice

LOL depressing indeed.. we gotta change!

you'r doing a good job...👍

Posting a video? Dude, he has a freaking master's in this stuff.