How Many Trees Are There?

Рет қаралды 307,028

8 жыл бұрын

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↓ More info and sources below ↓
Crowther, T. W., et al. "Mapping tree density at a global scale." Nature 525.7568 (2015): 201-205.
www.nature.com/nature/journal/...
Learn more about forest habitats: www.worldwildlife.org/habitats...
And let’s hear it for John Denver… www.youtube.com/watch?v=YBEkj...
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-----------------
It’s Okay To Be Smart is written and hosted by Joe Hanson, Ph.D.
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Produced by PBS Digital Studios: / pbsdigita. .
Music via APM
Stock images from Shutterstock, stock footage from Videoblocks (unless otherwise noted)

Пікірлер: 692

@Krittening 8 жыл бұрын

2:22 "at, get this, three trillion. That's un-be-leaf-able." You're really sawing me in half, man.

@cherrylimons5708 8 жыл бұрын

Don't you mean tree trillion.

@mikeshaftx 8 жыл бұрын

Leaf, please. I don't need another tree-son to spam another reply chain with bad puns again. OH GOD WHAT HAVE YOU DONE?

@TheOswald42 8 жыл бұрын

+PJohnnyJX "tree, treellion, that's unbe-leaf-able"

@BariumCobaltNitrog3n 8 жыл бұрын

+mike shaft Bad puns? That's redundant. How about these? He wondered why the baseball seemed to be getting bigger; then it hit him. I was going to get a brain transplant, but I changed my mind. I was struggling to figure out how lightning worked, then it struck me. God has left the building.

@ThatCynicalPoet 8 жыл бұрын

+Nebula Cubing I see you're branching out the jokes.

@Tylerthety 7 жыл бұрын

I'm disturbed to hear about all the trees being cut down, but it's what we all need to hear. Thank you for informing people about this.

@besmart 8 жыл бұрын

You seriously wouldn't be-leaf how many… PBS Digital Studios wants to know more about you, my curious friends! Check out the link in the description and go fill out our viewer survey so we can learn more about what you like and what you'd like to see more of. You might win a free t-shirt!

@daniellefalcon2172 8 жыл бұрын

Hi I love you

@tylersm360 8 жыл бұрын

42... theres 42 trees

@telesoforo123 8 жыл бұрын

I love you

@spencerschnur9426 8 жыл бұрын

+It's Okay To Be Smart Thanks for the Botany Video.

@user-nq1wp1so2z 8 жыл бұрын

+It's Okay To Be Smart can you start to put metric notations? >.>

@besmart 8 жыл бұрын

Share this video with your fronds, and we can make it the most poplar video on YewTube!

@embroglee5788 8 жыл бұрын

+It's Okay To Be Smart First!

@Huli-Man 8 жыл бұрын

I have no fronds.

@duckgoesquack4514 8 жыл бұрын

+It's Okay To Be Smart i'll smoke to that :D

@jhonerycontreras9676 8 жыл бұрын

i wonder how it feels like to be poplar on youtube...

@naingaung2748 8 жыл бұрын

"that's unbeleafable" 😂 pun lol

@nolanthiessen1073 8 жыл бұрын

I'm in the middle of teaching a unit on trees and forestry. Perfect timing! Great video.

@MrHegko 7 жыл бұрын

Planted more than 50 trees in my life. And keep doing it, because I love it. Fruit trees in general.

@brianhabing5076 8 жыл бұрын

Lesson: if you cut down too many trees, the remaining ones break down your dam, throw boulders at your tower and crush your army.

@Yogangster1995 8 жыл бұрын

Love LOTR

@cynthiaz5441 3 жыл бұрын

@@Yogangster1995 plant trees now

@cynthiaz5441 3 жыл бұрын

Brian habing plant trees now

@Yogangster1995 3 жыл бұрын

@@cynthiaz5441 This is the way

@travisk5589 5 жыл бұрын

I have been watching youtube vids since the get go. I am just now coming across this channel, "Its Okay to be Smart." What a score.

@anglox8240 8 жыл бұрын

I only came to leaf a like

@traciemorgan3426 8 жыл бұрын

hissss

@dylanghost2766 8 жыл бұрын

Hisssss

@theirongiantbigdawg 8 жыл бұрын

Hisssss

@quacy1946 8 жыл бұрын

Hisssssss

@musclehank6067 8 жыл бұрын

+Anglox Hisssss

@EugeneKhutoryansky 8 жыл бұрын

Not enough trees, and too many people.

@aidanperrone9209 8 жыл бұрын

Plant a tree for every Kardashian eliminated

@kingjamestres 8 жыл бұрын

+Physics Videos by Eugene Khutoryansky There really aren't that many humans its just we don't manage ourselves and the environment logically.

@KyleAnvilSlinger 8 жыл бұрын

There's only too many people in Africa, India, China, and South America.

@nathanbandstra6390 7 жыл бұрын

we need ents to rise

@ideallyyours 6 жыл бұрын

There are too many people *who don't recognise/care about their impact on the environment.*

@leonskisi8947 8 жыл бұрын

I love this video. I heard about these issues, but i've never seen a video explaining this so easy to understand!

@SvenEnterlein 8 жыл бұрын

Although I didn't grow the trees from seeds, I am glad that I planted 4 this weekend. Well, give them a new home at least.

@gigglysamentz2021 8 жыл бұрын

0:10 380 feet = 116 metres, if you were wondering...as I was. X)

@Astuar 8 жыл бұрын

Just want to say "Thank you" for all your videos! They made me stay curious)

@GoSICKeM 8 жыл бұрын

The physics stuff has got to be my favorite content, which I would LOVE to see more of, but I would also REALLY like to see some more hard science stuff explained with simplicity and the great visual graphics that PBS does so well. Specifically I mean: genetics, computer related things (comp-sci basics, programming, other related topics of interest), tech stuff, engineering, electronics, materials science, robotics, ANYTHING LIKE IT!!! Love it all so far. Keep up the great content and when all else seems unclear... DIVERSIFY (but science though -- **mostly**).

@Snackdaddy570 8 жыл бұрын

great video!!! it was something i didnt really think about till now

@CraigH999 8 жыл бұрын

In the province of British Columbia, Canada, reforestation has been ongoing since the 1930s. Approximately 7.5 billion trees have been planted. Since 1987, 98% of the forest lands harvested have been replanted.

@jake21I1 8 жыл бұрын

Fantastic! Great topics so far. Looking forward to more. 🙂

@ellieban 8 жыл бұрын

Fear + hope = action. Whenever you tell people about the environmental challenges we are facing, will you also highlight the incredible work done by the helpers? People like this guy: video.nationalgeographic.com/video/short-film-showcase/india-man-plants-forest-bigger-than-central-park-to-save-his-island There's always someone working to fight every bad thing and we need to know who they are and what they are doing. If you trigger fear and don't show people there is hope, you only create disillusionment and depression and very little will change, but if we hear about the helpers, we might become them. The hope is SO important. We need more hope.

@GreerFried 8 жыл бұрын

@1:16: How many do you think there are? *looks to his right, then his left, then his right again* "Ten".

@HMAOO86 8 жыл бұрын

"A man has made at least a start on discovering the meaning of human life when he plants shade trees under which he knows full well he will never sit." E. Trueblood

@sikensie 8 жыл бұрын

I'm lichen this video a lot. You woodn't believe it but trees are also highly beneficial for human and environmental health: filtering out pollution, providing flood water detention, increasing soil stability (less landslides and soil erosion!), providing shade and habitat, and reducing local temperatures. In fact, during times of drought, keeping vegetation alive in cities was found to be one of the most beneficial ways of reducing heat-related mortality :) Plus, from the psychological side they help increase perceptions of health and local neighborhoods - resulting in better rates of recovery and crime reduction respectively! Just thought I'd branch out a bit there, I hope that's vine with you all.

@housephone8646 8 жыл бұрын

Thank you for making this video PBS :)

@Kowzorz 8 жыл бұрын

NottinghamScience often puts out tree videos. Perhaps I'm missing some of the awesome tree channels, but I care about trees, foliage and other non-animal life and would love to learn about more.

@inditsnotdenon922 8 жыл бұрын

Living in bonobo trees sounds pretty cool

@marianwhit 8 жыл бұрын

I was astonished at how LITTLE forest there is. Could you please send the link to the map of the forests world-wide? I would like to take a closer look at it. Thank you.

@Zebra_M 8 жыл бұрын

But what about the little tree right here on my desk? They probably didn't count it! D: So uhm, the actual number is more like, tree trillion and one. :)

@mellissadalby1402 Жыл бұрын

3 trillion trees? I think we still need more. Yes, trees emit water vapor that helps to replenish the water cycle, but also just as impotant the water vapor content of the air helps to stabilize the air temperature and helps to ward off ground dessication.

@markfourtwenty9897 8 жыл бұрын

2:30 Best info ever !!!!

@Cutman3030 8 жыл бұрын

0:30 So trees are where Floam comes from?! Amazing! I loved that stuff as a kid!

@user-vf8wf2cx7q 8 жыл бұрын

idk what floam is but he meant the phloem. It's bunch of cells in the leaves of plants

@zekecort7979 8 жыл бұрын

Love the counting of tress part haha cracked me up

@kozar1977 8 жыл бұрын

Awesome video as always

@HunkCutie 8 жыл бұрын

Thanks for doing this video.

@eatingsfun 8 жыл бұрын

Its true. In the nineties they cut down 7 million trees in this remote SE region of western Australia for mining and for a decade the rain stopped, then we re-planted 7 million trees in 2011 and the locals say we have brought the rain back.

@eatingsfun 8 жыл бұрын

It was payed for by large companies that want to pollute the air without getting in trouble off the government.

@grNephrite 8 жыл бұрын

Love the show. Thank you so much for all the great videos! Would you consider doing a video on how deforestation has more to do with slash-burning for farmland than it has to do with paper manufacture? According to the USDA Forest Service, 4 million trees are planted every day in the United States, but a substantial fraction of this comes from sustainable forestry within the paper industry: 1.7 million trees daily. I work in biofuels (specifically from sawdust) and I routinely get questions about how the technology I work on will contribute to deforestation. If people understood how paper worked, it would go a long way towards understanding biofuels too. Thanks again for the great work you do!

@pearlstar1427 8 жыл бұрын

Finally found my type of channel😊

@kalekolehmainen6899 8 жыл бұрын

trees are a natural resource and will GROW BACK

@tvremote9394 8 жыл бұрын

this was pretty in-tree-sting thanks for uploading this video

@alphalax7747 2 жыл бұрын

This is like vsauce but it actually answers the question on the title

@BlenderBeanie 6 жыл бұрын

was taking a sip of my tea when you said "unbe-leaf-able", almost spit it all on my keyboard

@TungstenWu 8 жыл бұрын

I needed this thanks, It's okay to be smart

@user-iz9ix8ru8d 8 жыл бұрын

Obligatory pause at the mention of "420" to comment: blaze it.

@ParengDonsaElectric 8 жыл бұрын

love it love it love it thank you!

@cynthiaz5441 3 жыл бұрын

Plant trees now

@cryptthantoz782 8 жыл бұрын

Your videos are awesome

@Niom_Music 8 жыл бұрын

This was a tree-rific video! I wood watch it again😏

@asimthk 6 жыл бұрын

Excellent

@peytondennis9844 8 жыл бұрын

This is amazing

@TheSidder1 8 жыл бұрын

thanks for the hope, never thought there would be som many trees left, lets double that :)

@theldraspneumonoultramicro405 8 жыл бұрын

"It's unbelafable" - It's Okay To Be Smart, 2016 i plant tree seeds in pot's and after they have matured enoth i bring them out and plant them in suitable locations in nearby forests, i have planted 2 pine trees and 4 maple trees so far, last time i checked up on them they was still alive. i unfortunetly lost this years seeds to fungus.

@jeretoon8350 6 жыл бұрын

This video is roughly 6 minutes. 48 football fields of trees loss every minute. Rip to the 288 football fields of trees that died during this video

@Rallarberg 8 жыл бұрын

Am I the only one wanting to see LOTR now?

@GREENSP0RE 8 жыл бұрын

+Frank Robert Skogstad Of course not!

@most_dope_2120 8 жыл бұрын

I use your videos for homeschooling :D thanks. Keep up the good work :)

@user-hd4wf5gq8r 8 жыл бұрын

+Most_dope_ 21 oh dear God, that's the funniest shit ever, best joke 2016! but srsly wtf.

@manavito2390 8 жыл бұрын

I dont no you in any way, but you look like you have a really good personality

@RealSB 8 жыл бұрын

Will you do a episode about the idea of making buildings that function like giant trees? I think that's probably the most practical way to deal with emissions and the loss of forest cover. I think we should focus on green energy and even more on taking out what's already in the air and what will be put in the air before the long transition to green energy.

@porkyplays_4294 8 жыл бұрын

Wood you imagine that... 3 trillion...

@Master_Therion 8 жыл бұрын

+PorkyPlays _ Hahaha, I tree what you did there.

@porkyplays_4294 8 жыл бұрын

Master Therion Really? I'm glade you understand me!

@MiskaVlogi 8 жыл бұрын

I don't know how many people do know this but Finland is country where about 85% of it's land it's covered by forests. And we have a law wich states that every area where the fully grown trees are cut land's owner has to plant new ones so there is ALWAYS trees and actually even though we cut laaaaarge amounts of trees every single day there is more trees growing then we are able to cut. So thus it's win win situation for both people and nature. I'm my self studing to become an harvester operator driver (it's a big tracktor like machine that cut trees). If every country in the world would do the same they could get much wood as they want and the nature wouldn't be harmed at all. Hope somebody would like this so many people can see thid and see this knowledge.

@GraveUypo 8 жыл бұрын

i have had the curiosity of asking that question a few months back.

@UnpredictableSB 8 жыл бұрын

I only found out that this was PBS channel because I was looking at the studio's Wikipedia.

@MayureshGaikwadtube 5 жыл бұрын

What is the definition of a tree? Is there a minimum size requirement for a plant to be classified as a tree?

@GenGariczek 8 жыл бұрын

It's 2016 and you still use feet without adding meters on the screen?

@SoulDelSol 8 жыл бұрын

happy current year to you, to you

@charlieplays7344 7 жыл бұрын

Filip 'GenGariCZek' Kejnar it's 2017

@ethanchou4906 6 жыл бұрын

It's 2018...

@michaelmccarty1109 6 жыл бұрын

its 2018 when I'm watching it

@cynthiaz5441 3 жыл бұрын

@@SoulDelSol plant trees now

@emiliojimenez8749 8 жыл бұрын

I love you Bro! Thank you so so so much for creating a Video about deforestation and climit change!!!! the environment is the most important sub that should be talked about because it is only getting worst. We need the earth to say healthy for us to live in it. Stay curious!

@jn-hj6bq 8 жыл бұрын

Well I have a question. How many licks does it take to get to the center of a tootsie pop?

@sbonel3224 8 жыл бұрын

+Joshua Nguyen why don't you test it out for your self, kid?

@countesscryptess 8 жыл бұрын

Approximately 253~522. You're welcome.

@VeryAuuful 8 жыл бұрын

ur wot m8

@jdlogan48 8 жыл бұрын

@TheMusketITuckedIt204 8 жыл бұрын

+Joshua Nguyen 420.

@Rjsjrjsjrjsj 6 ай бұрын

THIS many!! (spreads arms as wide as possible) 😁

@fartzinwind 8 жыл бұрын

Where do you draw the line on what is/isn't a tree to count the number of trees?

@noorazraq2245 6 жыл бұрын

Trees are terrific!

@adamlatosinski5475 8 жыл бұрын

Suplementary questions: how much do all those trees weight in total? And how much carbon do they keep bounded out of the air?

@lahaineaveugle 8 жыл бұрын

UnbeLEAFable... Excellent!

@BariumCobaltNitrog3n 8 жыл бұрын

Isn't Sentinel tracking exactly this type of tree-mendous survey? Hi-res scanning of water content in soil and plant life around the planet. Too lazy to check, I think it also maps CO2, methane, CfC's, nitrogen content in soil and mullets. Or pirates. ESA can explain it better. Sidebar: my first job at 14 years old was planting trees for the city of Berkeley, CA. Still my favorite.

@svetlanabudnikovaofficial 8 жыл бұрын

Counting trees: 1, *2,000 years later* 2088, 2089 , 2090 *Another 2,000 years later* 67,123, 67,124 , 67,125

@svetlanabudnikovaofficial 8 жыл бұрын

Unbe-leaf-able

@marioroz3142 8 жыл бұрын

Does this number accounts only for trees on nature?, or it also includes trees from orchards, parks, etc.?

@WiglyWorm 8 жыл бұрын

“The best time to plant a tree was 20 years ago. The second best time is now.” - Chinese Proverb “A society grows great when old men plant trees whose shade they know they shall never sit in.” -Greek Proverb

@pavankumar1264 7 жыл бұрын

Awesome

@s.bharath429 8 жыл бұрын

l love nature, so this video also.

@livefree1030 8 жыл бұрын

sadly I've been advised I can no longer water the trees on my property due to the California drought. And by cutting back on my water usage the county is increasing our water bills.

@veganchaatparty 8 жыл бұрын

Super Superb!! Super Superb!! Super Superb!! Thanks.

@josequiles7 8 жыл бұрын

do a videos about the pineal gland!!!

@Vicioussama 8 жыл бұрын

Which link has the maps comparing pre-man vs modern times? Can't find it (though one link seems broken)

@fmlAllthetime 8 жыл бұрын

Videos like this depress me beyond belief. Like serious life questioning existential crisis level depressed...

@asimplefarmer6747 6 жыл бұрын

tbh exploring forests is more fun than exploring plains

@TenfoldExplorers 8 жыл бұрын

Danger Hunger is a collection of Top 10 videos based on various topics! We cover a wide variety of topics, including: Creepy, Unexplained, Video Games, Sports, Music, Geology, Mythology, and a plethora of other topics! Be sure to submit your OWN top 10 ideas for a chance to have your idea played on KZfaq!

@missoulaty 8 жыл бұрын

where did he get this awesome shirt.... seriously..... it's sweet!

@Robovski 8 жыл бұрын

We could count the trees. It would require a lot of effort, but it is possible, just like we beat smallpox or conduct a census. It would be a global effort and require co-ordination but it could be done. But we won't as it isn't very important to know exactly how many trees there are. Forrested area is more important and can be determined by satellite.

@kelvinkersey5058 8 жыл бұрын

hey smart guys, why don't we run out of tunes? there don't seem enough notes to make enough combinations. and how many tunes are there? cheers

@captaincatbug 8 жыл бұрын

I'm gonna plant some trees now🌱🌲🌲🌳🌴🌳🌲🌱

@manuelaguilartirado8674 8 жыл бұрын

Trees are like my favourite things in the world, I love them.....maybe more than girls... who knows..

@CapriciousChill 8 жыл бұрын

would it be possible to supplement/replace timber with bamboo?

@sawyerknight2344 8 жыл бұрын

Before watching the video, I'm going to take a solid guess of 45 trees

@algorhythm2373 3 жыл бұрын

Whoa...There are tree treellion trees on Earth!

@rauliparjo3779 8 жыл бұрын

THIS IS UNBELEAFEBLE!!!

@Berycg 8 жыл бұрын

Please use metric units also. Would be great.

@dannyzep92 8 жыл бұрын

Hey Joe, could we see a video on aquifers?

@dannyzep92 8 жыл бұрын

Especially the ogallala aquifer

@aDoe2aDeer 8 жыл бұрын

Yeah I totally agree! It would be nice for your insight this!!

@dannyzep92 8 жыл бұрын

+aDoe2aDeer I know that the ogallala aquifer sits below a massive area underneath the high Plains of the Midwest. It feeds a lot of our grassland and farms, it gives clean water to a few thousand people in Nebraska specifically. When we pollute the aquifer we pollute our own grain and corn