Neil deGrasse Tyson Explains Wind Chill Factor and More

It’s time for some more knowledge you didn’t think you needed to know. Neil deGrasse Tyson and comic co-host Chuck Nice team up for another StarTalk explainer about the science behind wind chill and more.
What is wind chill factor? Find out how the temperature of the air interacts with your skin. We explore why a breeze can help rapidly alter your temperature when you’re interacting with the elements. You’ll learn why your skin will cool faster in a mix of air and water. Discover how to create a “liquid” chill factor.
Is there still wind chill factor when it’s hot? You’ll explore why the answer is yes and why you know it better as a “cool breeze.” Neil explains why you feel cooler in the shade even if the air temperature is the same. What happens if the air temperature goes above your skin temperature? You’ll get the answer to that, plus, discover what happens when you go from a wind chill factor to a wind heat factor.
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About the prints that flank Neil in this video:
"Black Swan” & "White Swan" limited edition serigraph prints by Coast Salish artist Jane Kwatleematt Marston. For more information about this artist and her work, visit Inuit Gallery of Vancouver inuit.com/.
About StarTalk:
Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!
#StarTalk #NeildeGrasseTyson

[@DoveSimon]

My two favorite beings - an astrophysicist and a relatively "normal" hilarious and highly intelligent human. You guys rock! These are the best videos on the internet IMHO.

[@masternobody1896]

hi

[@chacdogful]

Highly intelligent? Did you watch this 😂😂😂

[@stever1693]

Garrett Poppell he is always cracking jokes but Chuck is a lot smarter than he lets on. He leads Neil through the explanations by playing student.

[@BenisGaming]

@@stever1693 Chuck kinda plays as if we were asking the questions xD

[@aniyah7491]

Garrett Poppell Chuck is definitely intelligent. You forget he is a comedian and his persona is intentional.

[@felipevaldez5502]

Never get rid of chuck, u guys are like rick and morty.

[@HansaGBB]

Wow that's so accurate

[@kyurenfn3193]

That’s so precise.

[@michaelcantu6071]

Sometimes he gets a little annoying and interrupts too much, but I like how enthusiastic he is

[@Synthwave89]

@@michaelcantu6071 Yeah, he overdoes it sometimes but the show would not be the same without Chuck.

[@vincevvn]

Michael Cantu he’s talking to the king of interrupting if anything he learned it from Neil.

[@chrislankford7939]

As a PhD in engineering--I actually taught a fluid/heat dynamics class for a few years, so this was right up my alley--I know the science. I enjoy StarTalk for the hosts' clarity of presentation, from which I learn to be a better high school science teacher. I confess to being shocked at times that people have missed out on so many fundamental ideas in the basic curriculum: latent heat of vaporization and convective heating/cooling, among them. Based on the other comments, I'm impressed with the StarTalk team's ability to keep perspective on their audience's actual knowledge level.

[@oldgreg487]

Chuck really got me with “and one of these is a real problem” 🤣🤣

[@tyronewills7935]

😂😂😂😂 he was trying to hold his laugh in too

[@adityakulkarni9455]

😂😂😂

[@ibtehajshaikh]

I was so confused when they started talking about ice water at 32° Then it dawned on me that ofc they're American, they use °F

[@PremierCCGuyMMXVI]

As an American I wish it was °C

[@arah8998]

Ahh ok, I was also confused until I saw this comment.

[@felipevaldez5502]

@@PremierCCGuyMMXVI y

[@PremierCCGuyMMXVI]

Bob S I’m from New Jersey

[@get2choppa429]

F stands for freedom units

[@nicholasgarrett8594]

I have to admit, I watched this episode thinking I wasn't going to really learn anything, ... I was wrong! The bit about hot air making things worse above a threshold temperature is new to me, and I've been suffering more than necessary during the summers because of it! I love listening to this guy explain things!

[@pedro2908]

Neil: (...) They're dehydrated and they're dead! Chuck: And one of those is a real problem. Lol

[@binaryum]

I don't get it?

[@MaegnasMw]

@@binaryum between "dehydrated" and "dead" which one do you think is the hardest to overcome?

[@vincloud3725]

@@MaegnasMw 😂🤣

[@oluwafisayo3676]

Lol A lot of people don't get Chuck. I love him :)

[@brettabey9973]

Me: "This makes perfect sense" Also me: Turns shop fan on at work when its 100 degrees

[@DANGJOS]

@Brett Abey As long as you're sweating, you'll still cool down from that. And before anyone "woooshes" me, I do understand this is a joke; I am just letting him know for his own info.

[@Metal_89]

@@DANGJOS did you not watch the whole video? cuz he explains that fans make you hotter when the air is hotter than your skin temp. even if youre sweating.

[@DANGJOS]

@@Metal_89 I saw that, and he's incorrect on that point. The heat of vaporization of the water will still cool you down, as long as the breeze is strong enough, and the air isn't too much warmer than your skin. Neil got a couple things wrong in this video.

[@BeamMonsterZeus]

@@DANGJOS I think you mean the evaporation of the water, not the heat of the water.

[@DANGJOS]

@@BeamMonsterZeus Heat, as in the enthalpy of vaporization, is taken from the water when it evaporates. That's what I meant.

[@anthrowolf1328]

"Information you never knew you needed" like if you think that should be the motto of Startalk

[@yehosuahercules4822]

2:52 totally LOVED chucks reacción to this😂

[@dukeparrott5300]

The face of an epiphany. Always a wonderful reaction

[@billcipher1212]

17:25 as someone who is used to celsius that does sound concerning even though i know its fahrenheit

[@PokemonRangerGrant]

It's Freedomheit!

[@zerashkderp6920]

It gets 100 degrees on some places normally so say like 30 ish Celsius Edit: say 40C thanks for the note-

[@jawid2058]

F - 32 / 1.8 = C

[@PokemonRangerGrant]

@@jawid2058 Thats not totally correct since 0 isn't the same on each scale. They actually intersect a -40°

[@jawid2058]

@@PokemonRangerGrant thats the conversion formula from F to C i dont know what you are talking about zero not being the same. no two numbers are the same except - 40 because if you use it in the formula - 40F -32 / 1.8 = - 40C

[@BlazeStorm]

Man Chuck's enthusiasm makes this so much better. I love these videos a lot!

[@whitsrcleftovers2707]

Love it. I was in a class, and the example the instructor used was the freezer department at the grocery store. The air was only one degree cooler, but if feels much cooler due to your heat being drawn away faster.

[@juliajergentz6976]

This is knowledge that I DO NEED! No joke, I was literally talking about this yesterday, and I said I wished I understood it better. If only I had Neil to explain it to me. Crazy! Thank you Neil!

[@elizabethtonovic4678]

As someone who lives in Australia, where it regularly gets hotter than skin temperature during summer, this was fascinating!

[@arnhelmkrausson8445]

I was wondering about the cool breeze thing infrequently. I knew about wind chill and how it works but never made the connection. Thank you so much Neil and Chuck!

[@wigiboo2228]

I love how chuck has been working with Neil for how long now, and yet is still mind blown on the daily. Goes to show we never stop learning

[@chisquare5701]

I think much of it is Chuck acting the part. In cases where he's actually learning something, and formulates a joke on his next breath is impressive to me, though.

[@dantemlima]

Chuck and Neil, you are fantastic! You are both great comedians and great teachers. Your work is crucial, keep it up, please. You shine through in these dark times of ignorance and intolerance we live in.

[@wilhelmwexler2637]

im 83 yrs old and need to learn something new every day. you two explain in a way that i can understand and is fun. thank you.

[@roginoapacible1]

When I were a kid, elementary days. I always wonder about everything and cannot stop asking questions to my dad. He answers in a way that in my age could understand and when he cannot answer it he told me to wait until I grow up. When I was in high school, every time we finish dinner we go outside just chilling on the porch having a conversation and I ask him about whats the difference of his past vs in modern times. Until i got to college and he got sick and passed away. Right now I missed him so much about our converations and i wish I have the chance to ask him whats in the other world and he tells me in my dreams. My point is thank you for this channel. Because i am constantly curious and I enjoy every videos and some how i could feel that it just the way my dad directs me to find this videos.

[@jonathanaragones6888]

Surely the memories remain, the record of everything is always written every single motion in Time. The moment you are conscious of something is also the moments of you are sharing in those records. How we learn is how we got directed. For sure your Dad directed you to this knowledge a long time ago when you gain your conscious in a matter you access the knowledge you share with your Father. Try not to forget but to remember and not just to know but to understand. Feel the love that your Father written in the record of memories and you will remember the knowledge that he shared with you. The wise man says "Do not just believe but gain knowledge to have a Wisdom", 😉👍.

[@ssbothwell]

🤣🤣🤣 "but wait, there's more!" 🤣🤣🤣

[@ForexMarkupsAnalysis]

oh...oh!!!!!!

[@4u2nvgarcia]

2pwpwlowolwl1l1lqllo

[@bartier861]

Lol

[@mikesullivan1988]

I graduated HS with Ron Popeils grandson lol

[@jakekowalcheck5653]

Neil Degrasse "But Wait, There's More" Tyson 😂😂😂

[@DA_MANTIS420]

Thank You Neil Degrasse Tyson. I love watching and learning from you and all your knowledge you're willing to share..!!! Your a great teacher and I love your enthusiasm to lecture about many different subjects.!!!

[@acousticreate]

I've only just discovered these, but I hope they never stop 😅 perfect morning coffee watching

[@mikeedwards4436]

I love that man, I have learned so much from him and he explains it so I actually know it and understand it and not just be able to recite it. When you know something it makes everything else in that same category easy to understand.

[@_Killkor]

That's also, how the hair dryers work, based on the wind heat factor.

[@jamesrivers878]

I feel so smart I already knew the part about the salt water..

[@revilo9224]

What part?

[@carlfrye1566]

I was taught "wind chill factor" by an engineer at my 1st office job 45 years ago - We were talking about the radiator in the car and if you needed wind chill air temp protection, which you do not as the water/air temp will not get below the ambient temp- the engineer chuckled as we debated this among ourselves before the lesson.

[@friedbergje]

So informative. I could listen to these guys talk all day. There’s a wonderful dynamic between them.

[@TheEscapingFate]

This is very useful information that I never knew I needed! If I ever find myself in 98° weather, I know now to stay away from fans and why hydration is so important. I wish all the teachers I've had in the past had Neil's talent for explaining things in a way that is easy to understand.

[@steveswangler6373]

I was thinking the same thing. I was remembering my high school physics teacher, he was a wonderful man, and he explained this process to us in class, but he did not make it as clear as Dr. Tyson. But then again In hindsight, in his class I was 16 and probably paying more attention to Bernadette H than to Mr. B lol (yes I remember my high school crush 30 years later)

[@budlewis721]

@@steveswangler6373 Don't we all.

[@mtbtx9304]

Love the Texas shout out

[@jeffhgv]

What a brilliant explanation and made easy to understand , Chuck always asks the right questions,❤️❤️.

[@Themoralofthestory.]

These segments about science in our every day lives are my favorite segments, thank you for doing these Neil😁

[@tierney6705]

Love how your talking about freezing and becoming comatose in temperatures that sound like the middle of summer to me 😂😂

[@hudsonensz2858]

Celsius vs fahrenheit

[@ivanorozco4274]

@@hudsonensz2858 xactly. When they were saying "32 degrees this, 32 degrees that.." I was imagining celsius. Corrected myself about 9-10 min into the vid lol

[@carultch]

Fahrenheit describes the human experience of ambient temperatures, on a 0 to 100 scale Below 0F is painfully cold The first third is freezing The middle third is cold, but not freezing. The accepted standard of comfort is at about the 2/3 point along this scale. The upper third is hot Over 100 F is guaranteed sweating to survive.

[@GregPappasJr]

Loved this. I always wondered what Wind Chill was. These other temperature facts were truly educational and fascinating. :)

[@meridien52681]

Come to Chi to learn about cold temps and wind chill in the winter. You won't ever forget "The Hawk" that's what we call the wind off Lake Mich in winter.

[@suzannepottsshorts]

Here in Iowa, we learn this multiple times a year from our local meteorologists. I kept waiting for you to explain dew points and the importance of nighttime cooling.

[@zomasm8907]

I watched this when it was new, and have continued to think about it while riding my moped around town with fall's decreasing temperatures. It's blowing my mind now. Thanks for this awesome "science I didn't know I needed"!

[@stephenc4159]

Chuck kills me every time 😂

[@nicklehman3984]

"And one of those is a REAL problem" haha. Wasn't Chuck one of the people on that world's dumbest show?

[@puebloking8280]

@@nicklehman3984 ha yea

[@jimbob90p]

Literally been thinking about this for years and now I understand it thank you for literally giving knowledge I didnt know. And it's not interesting but its fascinating!! Love these moments

[@revilo9224]

I don't get the part with the sweat fully..

[@user-ri5od9vv1j]

@@revilo9224 It's super easy. Wind is not the only way to get rid thermal energy by simple transmission from hotter surface to cooler air. The easiest may be, but air has pretty low dencity and missirable heat capacity, btw water has 4 times higher heat capacity and almost 800 times more dence. So air well insulates heat but sucks with cooling. Much better is transform thermal energy to work by evaporing water. Transforming thermal energy to change state of matter takes much... much more energy. For example, this is the way how Earth cooling. Radiant energy of sunlight turns to sea water evaporing. Then steam gets along to poles and high (it's important) mountains. Poles and mountaines are always cool by the similar reason of angle pinging sunlight to surface. So water condenses there to glaciers. In fact it means that poles and mountains get warmer, but it doesn't matter as soon wind there is so cold always. It blows out any warm. Then glaciers melt, and that is the added way to transform sun heat to work of melting ice. That means more sun heat makes Earth cooler, energy transfoms in water movement around the world from ocean to mountains. Funny, isn't it.

[@kevinwalden4288]

These 'Tyson explains' videos are amazing

[@1mmafrka]

This has quickly become one of my favorite channels.

[@NavdeepSingh-yp9pq]

"The Breeze isn't cool, I'm baby" .. never change Chuck

[@tonygalloway3704]

Neil is starting to look old now... i hope he never stops teaching. That would be a sad day if he did. I have learnt so much over the years from this man. As for chuck.... Hi chuck 🙂

[@brucegelman5582]

Before you comment on someone looking old look in the mirror.Just sayin....

[@tonygalloway3704]

🤣 I'm not old but we get older every day Bruce. It wasn't meant to be offensive but it sounds like you got a bit defensive there. 🤦‍♂️

[@ARandomInternetUser08]

@@brucegelman5582 🤡

[@grubhunterx4845]

Thanks for explaining the wind chill factor. I never understood why it weathermen mentioned it in the weather, and now it all makes sense!

[@kentkjrgaardjensen4304]

I love these explainations of every Day stuff. Its so exiting and useful!

[@marcossugizaki]

Love the video. Here's a suggestion: make subtitles with convertion to the metric system for your internetional viewers :).

[@redmatrix]

Sub titles are for spoken words. If they didn't say it, it wouldn't be in text.

[@gyozakeynsianism]

"Full disclosure now: I thought this was not even going to be that interesting! This is really interesting!!" Lol ...

[@Scott-wq5lk]

That information about making bottles colder with icy water than just ice has blown my mind. I love how I learn concepts that I did not know of before, and yet seem so simple after the video, and these concepts are just added to my understanding of the world forever.

[@manpreetbhattee9732]

So much info just under 20 minutes, brilliant.

[@vasudevraghav2109]

I listened to the audio book version of Dr. Tyson's book: 'Astrophysics for people in a hurry' Guess who was in a real hurry😁

[@Werewolf914]

My guess the author of the book?

[@vasudevraghav2109]

@@Werewolf914 oof

[@gioortiz2197]

Love you guys

[@PHutch-me5bq]

Thanks to Chuck for ur humor and Dr Tyson for explaining knowledge we didn't know we needed.🤗🤗🤗🤗

[@heaslyben]

I always love me some Neil and Chuck, and these explainers have really distilled the essence of the Dialogic Duo!

[@aaronseet2738]

Respect to firefighters.

[@ivano988]

I love when im this early to cool things like these

[@lotexgaming5436]

You mean chilly right?

[@ivano988]

@@lotexgaming5436 yes excuse me

[@email16v]

This is a very much welcome topic! Just yesterday, my wife was criticizing the weather app because it said in the next few days the highs will be about 50 and the lows will be about 37 and yet the app says a 50% chance of snow. No matter how I tried to explain it, she wasn't buying it. so I gave up. I would love for you to have a part 2 discussion about a similar topic. How to adjust the car's air conditioning settings for the same temperature/humidity scenarios. No matter how much I try to explain how it works, she insists when it is cold, use the heater but the windows are still fogging up. I tell her to use the AC so the moisture evaporates but she says she won't because why would I use the AC when it is cold. I think this science is being missed by most of us and many of us still do not know how to adjust our car's environmental controls! Please help!

[@dionmerm14]

Loved this explainer! I think it's one of the best

[@Heareaux]

"And one of those is a real problem."

[@MrBachram]

I’d love to hear Neil’s thoughts on the best way to gain energy (heat and electricity) using solar radiation (IR and UV)

[@limitisillusion7]

The dynamic between you two on this podcast is perfect.

[@SpaceMiner007]

Neil, Chuck, that was worth watching the explainer on windshield factors. My warm bloodedness adapts well to both the heat of the Palm Springs area and the chill on the north end of the state.

[@dariusechols751]

Can we name these explainer videos "Neil Explains the Universe" or everything in it!

[@DANGJOS]

There are two things Neil said that weren't quite right in this clip, and I think it's important to set the science straight on these. 6:47 Here, Neil isn't fundamentally incorrect, but has a misconception of the thermodynamics, probably because this is more about chemistry. Salt does not melt ice at its current temperature, it makes the ice *colder* than its current temperature. Even if the ice is at 32 F (0 C) degrees, the ice will *drop in temperature,* because it takes energy to break the bonds in the ice and turn it liquid. This energy comes from the internal energy of the ice, and so the ice can therefore drop several tens of degrees, with the correct mixture. 12:18 This isn't a correction, but I just want to add to what he said here, and this will become important later. Water (like virtually any liquid) has vapor pressure, which means it is always losing water molecules. This humidifies the air surrounding your sweat drop, which means more water molecules will bounce back into the sweat drop and release the same heat that was lost to evaporation. This is the same reason humid air reduces evaporation, and hence cooling efficiency. If a breeze blows away this humid layer, then less water bounces back into the sweat, and therefore more of the sweat evaporates, and you cool more efficiently. The above paragraph is important for the second misunderstanding, and this is something that Chuck says, and Neil incorrectly agrees with. At 16:05, Neil says that the sweat receives heating from the surrounding air, rather than your body. That's not quite right. As long as the air isn't too far above your skin temperature (maybe 105 F [40.6 C]), and the breeze is strong enough, the moving air should still remove water vapor (and thus heat) from your sweat fast enough to cool your sweat, and thus your body as well. And even if it was so hot that the hot air does warm the sweat more than your body, it still wouldn't heat you up more. The rate of heating would still be less with the sweat because the enthalpy of vaporization of the water would offset some of the heating from the air.

[@BPLegendas]

Nicely done, i got confused at 16:05 when i thought about stronger breeze wheter its cool you down or heat you up

[@DANGJOS]

@@BPLegendas If the air temperature is only a little hotter than your skin temperature, and you're not sweating, then the breeze will indeed make you hotter. If you are sweating, however, the breeze will *cool* you down instead.

[@BPLegendas]

@@DANGJOS but if im not sweating and the air temperature is hotter than my skin temperature i ill get hotter and then il sweat, so its just after that the breeze will cool me down, right?

[@DANGJOS]

@@BPLegendas Yes

[@vincevvn]

Neil doesn’t care if he’s correct he cares that he’s talking.

[@joddog]

I love Neil when he's not upspeaking. Actually so informative and fun.

[@aliarsal4082]

I always wondered why they show "feel like temperature" in weather apps. But now I have understood that. This is great. Love this show.

[@bradleypetschow8802]

Chuck says “this is really cool”. Haha

[@platformstrange1794]

Windchill is why polar explorers say "you sweat, you die" Best explained Heat is adding energy to an object Cold is simply the absence of energy

[@JasonWW2000]

Well no, there is never an absence of energy. "Cold is simply the reduction of energy"

[@luckan20]

Very informative. Thank you Dr. Tyson.

[@sherrylennondewitt4102]

Thank you! You have no idea how much clarity I'm getting atm.

[@korn7809]

Computer enthusiasts should know plenty about wind chill.

[@JasonWW2000]

I am that, but don't get your meaning. What does wind chill have to do with computers?

[@BombaJead]

@@JasonWW2000 thats the way heatsinks work, for example the ones used for cpu or gpu cooling.

[@korn7809]

@@JasonWW2000 what Bombajead said.

[@JasonWW2000]

@@BombaJead No, that's not how wind chill works. A heat sink is simply thermal transfer through convection. Wind chill is something that is specific to human beings with their 98.6* degree body temperature.

[@BeamMonsterZeus]

@@JasonWW2000 The same physics and principles apply to what we call "wind chill" as what apply to fans attached to heat sinks or radiators. Air that is cooler than the surface it is blowing across will take away its heat. If you disagree, then you must not have even watched the video or know anything about thermodynamics.

[@papaelf]

"The wind isn't cool, I am baby!" 😂😂😂😂😂

[@ravewithyou]

I love these kinds of topics of discussion--they're both fun to learn and completely relevant in our everyday lives. Love you guys so much!

[@miroslavkowalski5783]

Wind chill factor is actually a knowledge I was searching for and really needed.

[@buhnux]

"Have you ever been behind a jet engine when it turned on"... Really curious how many people can answer yes to this.

[@lostwizard]

He didn't say how far behind. That does make a difference.

[@timothyball3144]

Oddly, this was the exact scenario in a dream I had a week ago. It didn't end well.

[@sammy1889]

never been this early

[@Zackaria_sMax]

Time is relative. And I can tell your the type of person that's always on time for startalk. Even if you think you're relatively late to these.

[@scrublord321]

Zack Max I’ve never been this early because I’m new to the channel and all the other videos I’ve watched are years old, so even if I found this video 11 months later it would still be early

[@svetlaniliev6979]

~10:30 "clothing colours would generally change from summer to winter". I think it depends on the clothing- in very hot environments like deserts, inhabitans usually wear full-body black clothes. They wear them loosely so that the air doesn't let the heat absorbed by the fabric to reach the skin. P.S. Thanks for the videos! I gain a lot of knowledge that I did not know I needed! Also, I laugh a lot (:

[@Dreamt222]

Neil is my favorite astrophysicist. Much love from your audience in Yemen!

[@wesmccarley9845]

This fool just dropped Ron Popeil infomercials into the mix!!! How awesome is that? All you young folks look him up, and I am so sorry you never really got to experience that!!

[@scrappymark]

Ugh, was that really that long ago!! 😂... were getting old!!

[@ddpwe5269]

Neil: You won't last very long in 35degree water Wim Hof: That's my daily bath water temperature and can last at least 60min =P

[@MidwestDankAlumni]

Neil*

[@Soapy-chan_old]

Because they talk about Fahrenheit

[@ddpwe5269]

@@Soapy-chan_old Go look Wim Hof on YT and you'll see why.

[@hollenfeuer1]

It was -32 wind chill, so this came up since I'm the prison science teacher (not really, just happens a lot) and I didn't "know" this, but when explaining to an inmate how I believe it works, ended up being the right answer, just a lot less information. Kind of proud of myself.

[@l2etranger]

7:32 😅 you're really good! That's the best way to put it in perspective and get our attention at the same time.

[@lizardxqueen]

I’m here too early too! 😂

[@xiwang2129]

True

[@jeremybarretta5282]

ALWAYS COOL CHAT WITH NEIL...first

[@andrewolson5471]

We all need more of Neil DeGrasse-Tyson's knowledge in our lives.

[@ericdunthorne1981]

I thoroughly enjoyed the information. Thank so much.

[@ghost7344]

I want a T-shirt that say "I'm with Neil"

[@awood9214]

I wish someone as smart as Neil would run for President.

[@jarrettludolph6000]

Make America smart again vote Neil Degrasse Tyson 2020

[@SwiftCreationStudio]

No one who is smart runs for President. That's not exactly a bash on any one person it just seems like an all around horrible but important job

[@JasonWW2000]

Better to educate the citizens so they can elect the best people.

[@lakishadunn1693]

Once again...Great info Mr. Tyson!!!!! Thank you and be safe!!!!!

[@ajay-xjs]

Awesome episode, really enjoyed this one 👍🏻

[@Streety420]

Neil deGrasse Tyson and Chuck Nice give me life.

[@michaelsavides8856]

I don't think Chuck realized it but he explained it the best when he said:" refreshing".

[@RachelLouren28]

I love listening to these two. Best combo ever.

[@pboston6RR]

Here in Arizona we refer to our summers as “it’s a dry heat”. The implication is that if we stay hydrated we can evaporate water thru our skin to cool our body. We don’t feel cool but we can tolerate the hot air temperature as long as we are hydrated. As you know, the phase change from liquid to vapor for water requires an enormous amount of heat (540 cal/gm just for the phase change). When we get out of our 85 degree swimming pool we are almost instantly shivering due to the enormous heal removal from our skin even if the air temperature is 100+. Kids wrapped i a towel will be sitting around with their teeth chattering until the swim suit dries out.

[@ldmtag]

Yeah, I was thinking about that too. Was scrolling down looking for comments like yours. Like, water always somehow manages to keep cooler than the ambient temperature, and the skin is actually cooler than the air around, yet somehow still evaporates the sweat. I remember watching a science TV show Galileo, they measured that the temperature of skin in sauna with hot air close to 100°C (probably like 200 F) was just 14°C. And the lady wasn't dying, she actually felt pretty good in there.

[@Russia-bullies]

As the channel turns ordinary topics into extraordinary sci,without compromising on facts,I love it!

[@FeelnLikeIDoEveryDay]

I need more of this Neil Mr de Grasse. Thank you.

[@fairyboots9794]

I luv you guys and this was awesome. Crazy info that I didn't know I needed. 😄

[@samflanagan77]

Y'all take ROFL to a whole new level. Really enjoyed the clip(diff vid) on the New Zealand geologist. There's a documentary available via alternative streaming platforms that feature New Zealand's geology. They've got a front row seat to plate tectonics thxs

[@lisear2926]

Excellent intelligent men continue bringing me useful knowledge. You are appreciated , don't stop.

[@HeartNSoulHG]

Love both you guys, and I love learning something everyday ^_^ thank you so much, and keep it up!

[@Yash-tx6bb]

2:54 that reaction is priceless

[@melissapyle7879]

In the southern US we r very familiar with these effects. Especially in our hot and HUMID summers.. they r a beast..