The science of smog - Kim Preshoff

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On July 26, 1943, Los Angeles was blanketed by a thick gas that stung people’s eyes and blocked out the Sun. Panicked residents believed their city had been attacked using chemical warfare. But the cloud wasn’t an act of war. It was smog. So what is this thick gray haze actually made of? And why does it affect some cities and not others? Kim Preshoff details the science behind smog.
Lesson by Kim Preshoff, directed by Juan M. Urbina Studios.

[@jimmyjimmy5574]

You go Kim. I'm so happy that teacher like you still exist.

[@CircleWedge]

Yes

[@sweatypockets1923]

We love you kim

[@Yandelvillegas]

Ayyy 😲

[@iamkapilkalra]

Mrs. Preshoff thanks for your insightful lessons. I Love them!

[@sunrisespartan1765]

Kapil Kalra I agree

[@averyspecificshadeofblue4106]

Me too

[@kokocharles3627]

Kapil Kalra agree

[@Lordpilum]

Ditto!

[@spark-choco]

Kapil Kalra I

[@baashaalbaashaal6427]

You could tell this lesson was made by high school teacher because i understood every word of it. Nice job kim

[@ashibe2649]

Kim: I am a student from Guatemala, who always loves to learn new things. Every TedEd lesson is an impact for me. I really like this short Lessons, they are interesting and very clear. I'm so happy you have done 5 educational videos! I really liked this one! I motivate you to do more videos and keep teaching. So in that way you can motivate more students (yust like me) and educate them!!!! ❤️📚📽

[@blessednikki82]

Congratulations Kim!!!! Thank you for your educational influence. You are greatly appreciated🙏🏾

[@Lover_of_Pancakes]

You're the MVP Kim

[@MiSt3300]

Pancake Lover wasn't MVP referring to 'most valuable player' in counterstrike global offensive?

[@AstroLizard]

This was great, Kim! Thank you.

[@emmaspantry8660]

Love for Kim:❤️❤️❤️❤️❤️ One for every video!

[@TA-mj1wd]

Who the f is Kim

[@aadityarajbhattarai5475]

@@TA-mj1wd Kim jong un

[@jessicaruby1753]

Kim: thank you for all you do! You are an inspiration to teachers and learners everywhere.

[@carolel2459]

thank you, kim!! this was really great to learn about

[@logansmalley3921]

+

[@rushikeshkudave4702]

thank you kim for such a wonderful video

[@prabhsharansingh5222]

well done kim keep it up

[@ryangu_music]

Oops sorry I thought you were talking about Kim Jong Un :/

[@saras6634]

Dear Kim, Thank you for your devotion to teaching both children and adults about the wonders of science! You are a true hero and inspiration. I wish you all joy and love, and hope that you will continue teaching for many years to come.

[@Giga_Pudding]

Thanks for your efforts, Kim. :)

[@perrytheplatypus8089]

Thank you Kim for your hard work !

[@arjuniyer7847]

Thank you Kim.

[@Ky-ig6vk]

Kim you make learning about smog so much easier! Thank you!

[@natashapopli2785]

4 years later and this video is still very relevant and impactful. Well done Ms. Preschoff!

[@siddhiraskar5464]

Pretty cool animation...😘

[@meenuchoubey7210]

snapseed a ikr

[@siddhiraskar5464]

tyran slow down mister😏

[@thepepchannel7940]

snapseed a I ship it

[@weareeverywhere]

very erotic

[@nawafalmugbel75]

amazing

[@muhammadjoosab785]

Congrats Kim Some1 let her now I hope she does well educating more people

[@jigneshsabhadiya7358]

www.engineeringchoice.com/smog-causes-effect-and-control-measures/

[@farisfaizal905]

almost a year after you posted this, still helpful. thank you Mrs. Preshoff

[@BienvenidoAlHoloceno]

Very good video! Thank you Kim Preshoff for sharing this with us :) I live in Santiago de Chile, a city historically affected by smog. The city lies in a valley, which makes the problem worse. In the last years, luckily, the cases of extreme pollution have dropped significantly thanks to state policies, but there is still a lot to do.

[@Isyrawr]

thank you kim for spreading knowledge

[@ragnaroksg1]

we need more in our society like kim preshoff. Great Job!!!!

[@pieeater555]

Thank you Kim!

[@hanhquyentranvu1061]

I have been expanded my horizons desperately thanks to this channel. Thank you very much Mrs Kim and Will be your staunch advocate 😘😘😘

[@jwproductions5070]

This is one of the best Ted-Ed lessons I've watched. I want for lessons from you, Kim and you are an amazing teacher.

[@crocarms]

Way to go Kim!!!

[@bykimstander]

*WOULD LOVE TO HEAR MORE FROM KIM PRESHOFF ON TED-Ed!*

[@supanscience8398]

Hi Kim! I am Vicki Albritton's daughter. I am super excited to have this video to show to my APES students tomorrow when we start our air pollution unit. Thanks!

[@lynndai7735]

Thank you so much Mrs. Preshoff! Your videos in Ted-ED along with other videos in Ted-ED helped my grades boom more than ever! I also love watching them simply for fun and interest.

[@mrigankjain1817]

Thanks Miss Kim

[@AAYMF]

Kim ❤️

[@Em-uk8ew]

Thank you Mrs. Preshoff! Great to see an educator from Buffalo spreading wonderful lessons!!

[@rajaraghavan699]

Mrs. Preshoff thank you for giving this amazing lesson . I love this channel .

[@riteshram74]

I wanna make a pun on chemistry But it wouldn't get any reactions

[@azuregriffin1116]

You are my new God.

[@durpddurke4633]

Ellen DeGeneres wow, wow just wow.....

[@urooba7578]

Ellen DeGeneres of course it's coming from you, Ellen.... TYPICAL.... 😒

[@samiagius422]

Ellen has some nice puns

[@lutu1408]

That was a stable pun, if I may say so my self.

[@jaskarnsingh1347]

Thank you kim.

[@chengyong66]

Teachers like Kim are teachers we need and deserve

[@starsfall4us199]

Thank you Kim! I wish I had a teacher like yourself growing up but I'm glad you've taught fantastic lessons (now internationally ).

[@joshuaaderanti3018]

Thank you kim for your informative videos.

[@nawafalmugbel75]

I have a final exam for science and this really helped, thanks mrs. Preshoff.

[@user-qh8oj4qj8q]

I love ted ed I listen to it every morning

[@YogalakshmeKumaaravelan]

Ms. Preshoff, I am glad that your gift for passing along concepts and information in interesting manner has been widely enjoyed by the world through Ted-ed. It is obvious that you find educating to be a deep purpose and calling in your life, and I am honoured to benefit from it even though I am half way across the world from you! Wishing you more recognition and acknowledgement all the way from India❤️

[@hiperalee]

Thanks for the lessons, Kim! Wish we had more passionate teachers like you. Keep up the good work, you are an inspiration to many people, including myself! 💟💟

[@faraxra]

I love her voice!

[@rohinisharma4974]

I know, right?

[@zacklee9260]

Thanks Kim. This is really helpful for my Environmental Chemistry final examination in next 2 weeks.

[@tanishakothari2220]

Every country needs such passionate teachers like you Kim! Thank you for being one! Love from India!

[@kulsumauddin8742]

The way she pronounced Glasgow.

[@enzoma7253]

is incredibly irritating

[@brendonurine1118]

ahahahha glosgaow

[@kulsumauddin8742]

Khushil Parikh you pronounce the "o" in Glasgow.

[@Nathan-pk1tb]

I came looking for this comment

[@Nathan-pk1tb]

Khushil Parikh, it's Glas-go (at least in British English, not sure about American English)

[@alexrogers262]

Thanks Kim 😊

[@shreyaspakhare1313]

The most complex of events and terms explained in the simplest words!! Thanks Ted-ed and all other lecturers like Mam Kim Preshoff!!

[@scahsaint6249]

Never stop educating Kim. The world desperately need people like you. The world needs to love learning again.

[@aldrinirsyarasyid6081]

Pagi Teknik!

[@muhammadkafkaal-ghifari1712]

Morning!

[@kintanakilanaurelia4228]

Pagi!

[@fathyakhalisa798]

Pagi!

[@tarishahcahyaniyasmin7539]

Pagi!

[@anindyaamaliarahmah3194]

Pagi!

[@eurovisioncyan9550]

What I learned today: TED-Ed help amplify the lessons of great teachers -Idc what you are thinking-

[@oledakaajel]

Is this a meam?

[@atouloupas]

oledakaajel No, it's a meme

[@oledakaajel]

That's what I said, a meam.

[@et496]

oledakaajel lol

[@akulspianotutorials]

The greatest gift one can give to man-kind is knowledge and education. Thank you Mrs. Preshoff for doing exactly that. 😊

[@chamikathattil8151]

Thanks Mrs Preshoff. I wish I had a science teacher like you.

[@skilbhumen2875]

its morning in my country and someone (Kim Preshoff) just made my day!!

[@sumitrapandit1879]

Congrats on your fifth video Kim!

[@dhirajbibekar5304]

thanks Kim for giving your precious time to us, and teaching us

[@madil2259]

Thank you TedEd and Kim Pershoff and all the all the others who helped in the making of this video.

[@ostrc7221]

Hi, generally a good video. However, nitrous oxide (N2O) is not the same as nitric oxide, also know as nitrogen dioxide (NO2 or N2O4 since it exists as a dimer), which is what the real problem is in smog. This is often represented as NOx. These are very different compounds with completely different properties. They are as different as water and hydrogen peroxide. Nitrous oxide, is a colorless, nontoxic gas, in fact it is used as a dental anesthetic. N2O4 is a reddish gas which is highly reactive, corrosive, and toxic. It would also be reasonable to refer to the compounds in smog as "nitrogen oxides", if you prefer. Please correct this.

[@mikado6407]

Best animator

[@hnuhliyang6728]

Love you Kim. Thank you for sharing your knowledge with everyone. Appreciation humbly given.

[@samiaahmad8705]

You really caught my attention with your voice and your style, Mrs.Preshoff. Thank you for this lesson.

[@castle9165]

Who on earth dislikes this? Was it because she said Glasgow weird? I don't understand!

[@sicarius6501]

The Austrailians are liking the video

[@dumbbluedino1382]

@@sicarius6501 ʎǝs

[@husainshaikh8724]

Smoke + fogg =SMOG

[@castle9165]

DEVILs YARD smog confirmed! Dir dir dir duh dir...

[@rohinisharma4974]

...... Lol

[@jancelragas3750]

Way to go, Kim! I’m so glad you decided to take your lessons outside the classroom! It’s passionate teachers like you who make people want to learn!

[@madyluna599]

Mrs Preshoff, your lessons are definitely worthwhile! Keep up the great work!

[@AWESOMEEVERYDAY101]

IF U CAN I HAVE ANOTHR IDEA FOR A VID: 1) HOW DOES POLYMERISATION OCCURE 2) HOW TO REDUCE POLLUTION

[@mr.denver0075]

Nice Kim

[@HaroldGil]

Nice job, Mrs. Preshoff! Thank you for the clear exposition!

[@keriezy]

Ms Kim! Great stuff, always loved science.

[@AWESOMEEVERYDAY101]

Plz make a video on how do cramps occure

[@luqmanadam4913]

Last time I was this early, England is my city.

[@azuregriffin1116]

England is my Country of birth.

[@castle9165]

Luqman Adam England is not a city

[@KookiesNolly]

*England WAS

[@grandadmiralthrawn1122]

kzbin.info/www/bejne/ooi4Z5mdiMl4gaM It's a meme. Here's the song it comes from :)

[@tejaljirvankar1268]

Mrs. Preshoff you spoke so articulately 😌Lots of respect and love ❤❤

[@shenikajerimie6050]

Thank you Mrs. Preshoff for your wonderful contributions.

[@tokk1370]

Loved the way she pronounced Glasgow

[@ashibe2649]

UniVoidz This is the first comment in wich a person is happy for the way she pronounced that word. (😂😂😂) I also liked the way she said that word!

[@HarbourSeal]

UniVoidz it's just a shame it and Edinburgh were pronounced completely the wrong way.

[@san-bp4yt]

0:57 sounded like the beep in among us

[@Ky-ig6vk]

Lmaoo it does

[@ladutz]

Congratulations Kim, we are proud to have people like you among us!

[@loleq2137]

This is basically the best channel that is here currently to learn English AND really interesting stuff! Keep it up guys! Greets from Poland ^^

[@ejbuhnieeee6148]

💟💖Kim Preshoff💕🎀

[@Nugcon]

There's like 4 first comments.

[@katzpajamas5123]

Congratulations Kim! Going the extra mile for education makes you a hero!

[@Xyradia]

This is so important. Thank you, Kim Preshoff. You are amazing. I'm so glad there are teachers like you.

[@alanparker9608]

I'm early let me make a joke USA

[@BaxterDaTrashball]

Koffing, use smog attack! From Pokémon!

[@jyotsnachauhan7275]

Mrs Kim Preshoff, very insightful study!! Great to see a teacher like this!!

[@DhruvJain1]

we need more educators like you Kim!

[@Angel-hc8bk]

I am slightly annoyed at the way she pronounced Edinburgh and Glasgow it's Pronounced (Glas-Goh) and Edinburgh is pronounced (Edin-Bruh) not that difficult. Never even heard them be pronounced that way before.

[@brendonurine1118]

mhmm i'm from edin and omggg

[@KookiesNolly]

you Scots are so annoying

[@AliMohammed-ez6nt]

1:21 who also thought it was a cow at first? xD

[@KookiesNolly]

umm it's a cow

[@jedidiahslaboda5620]

But, it IS a cow

[@jedidiahslaboda5620]

Oh, nvm, it's a bull because it has horns, but it's also genderless, because it has udders and horns

[@sheldonfernandes3588]

cows do have horns

[@mohamedmagdy4412]

He meant who thought that it was the cow which causes the mentioned kind of pollution.

[@AteendraGN]

We need more dedicated educators like you. Thank you, Mrs. Preshoff

[@rosannecoutinho1425]

The video is two years old and still it helped us gain knowledge in quarantine era

[@TheScienceBiome]

*SMAUG* ... anyone get it?

[@KookiesNolly]

the desolation of smog ? NO I don't get it

[@armando3699]

What was that pronunciation of Glasgow? It's pronounced Glasgo

[@brendonurine1118]

omg yeah glosgaow and like i love in edinburgh and it's noT edinboro

[@armando3699]

brendon urine She pronounced Edinburgh like I would. I'm from Stirling

[@thatoneanimefan4496]

brendon urine but how is it pronounced then? Our english teacher also pronounces it that way.

[@HarbourSeal]

Sugar Cat Glaz-go and Edin-bra or Edin-bruh

[@armando3699]

Rebecca Erin Connolly Edinburuh not Edinbruh

[@rkiriadre]

Thanks Mrs. Preshoff for such valuable contribution!

[@Voiyce659]

Teachers are amazing, imagine impacting 6000 lives directly. I'd love to find a way to do that and more. Well done Mrs. Preshoff

[@cheetahgames3342]

Incredible chanel☺.If you agree with me, give a thumbs up.

[@tomoates2910]

Nice stuff Kim and the whole Ted-ED team :). Always glad when I see that you have uploaded a new video

[@peterjones701]

Thank you Kim! Educators are the backbone of our future!

[@animandorscrew9598]

Don't Click The Logo Of Discovery Channel😱

[@staticklingon2182]

No problem.

[@castle9165]

ok Thx

[@jamfucked]

Anti-First Comment

[@BlauweWolkjes]

Kim, thank you for spreading your knowledge! I really appreciate your contribution to learning on the internet

[@elenclampitt2876]

Thank you for the information and for teaching us (The best Year 9 students)

[@abhiramrajeevan]

EARLY HURRRAYYYY