How Studying Venus Saved Earth
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- Опубликовано: 29 сен 2024
- Chlorofluorocarbons, or CFCs, seemed too good to be true when they were first created, and before long astronomers studying Venus' atmosphere discovered what could go wrong with this "miracle molecule."
Hosted by: Caitlin Hofmeister
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oh wow its almost like we've already proven that human activity can drastically affect in the planet in a short amount of time
Almost created a mass extinction event. Thanks Venus, we owe you big time.
Odarris Dhaiti oh my God you exaggerate
Didn't say human mass extinction. 😉
This is one of the things I show people when they say something stupid like "why are we exploring space when we have problems on earth."
I think the media needs to make a bigger deal out of this. A lot of people dismiss environmental concerns because it seems huge and unsolvable. But we actually fixed the hole in the ozone layer!
While we are on the topic, this got me wondering, so how was the ozone layer able to heal itself?
It's a good thing the Venusians discovered CFCs before we did. Noble Venusians, thy deaths shall not have been in vain!
i remember this happening. it was scary.
I wonder how long the earth would have lasted without stopping the use of CFCs
I wish we didn't live in a time where it's considered acceptable to have personally narrated videos be a clusterfuck of retakes of every second sentence stitched together like a bad Max Headroom parody.
Hello can you guys do a show on explosives in space? Would the work? If you detonated something equivalent to TNT, How would it behave? Would it be useful?
Accidentally saved *us*
I wonder how these people feel when they learn the truth.....
OMG WHAT IS THAT SOUND!?!?!?!?!?!?!?!?!?!?!?
When I was younger I actually heard about this and as the far too intelligent 6 year old I was I thought that there might used to be intelligent life on Venus but they just destroyed their planet and either died off or traveled to Earth
Some1 send this to Trump! The guy thinks his air spray is sealed inside his apartment, so it's not gonna go out...
Someone saw Thunderf00t's video...
I wish his apartment were that well sealed, then he would have asphyxiated a long time ago and the country might have a slightly better, scientifically illiterate blowhard in office.
Good. So it's not my farts
Ahtzee Gaming methane is bad too
i was excited to watch, then I threw up in my mouth
Pledge.
whoops half of europe died
In what universe does an electrophile (Hydrogen) attack a nucleophile (oxygen) lol it should be the electron dense oxygen (nucleophile) reaching out for the electron defficient hydrogen (electrophile)
Eric Alonso Wow. Someone's a big boy that just memorized his weekly vocab, isn't he? Does the big boy feel special and superior? Cute.
clearly addressed to Trump
Yet another reason why research should NOT be profit driven only.
It's easy to see the similarity between the CFC/ozone layer situation and global warming. Lots of people are skeptical and there could be disastrous consequences for our planet if we continue with our behavior.
The truly frightening thing is that, like the CFC situation, it'll probably require a big event similar to the hole in the ozone layer to spring people into action. Such as . . . . I don't know . . . maybe the flooding of some coastal cities.
unlike the CFC however, global warming has feedback cycle and it will accelerate itself without any human assistance. So once trouble starts, there is no going back anymore.
it will be even harder to convince people to do something about it because global warming is a much more complicated issue. In this example there is a very clear relationship and only one chemical reaction. It could be proven and we knew once the ozone layer started thinning that it was bad news. Also only one industry produced CFC's so the rest of the world could vote them done and initiate controls.
For global warming there are whole books on the issue. Everyone knows CO2 is a minor greenhouse gas but the models that project the "problems" are shaky and don't predict accurately for more then a few years. So even though a lot of people agree warming is happening what everyone isn't convinced that it will result in a disaster scenario. Plus you can point to feedback mechanisms like the ocean absorption and plant/algae oxygen production increasing in response to rising CO2 levels to argue the earth will dampen the problem and slow down the effects. So there is no one clear argument to make and everyone has different ideas about how it will play out. Put on top of this the fact that almost all industries emit CO2 and you have a powerful lobby to stop regulations unlike in the case of CFC's where only one industry was affected most industries are affected so they will fight harder.
It's the tipping point argument that many people don't buy. The models used to predict it have so far failed to predict even 3 years in the future accurately so should we trust them? Clearly the earth is warming and CO2 levels are rising along with ocean levels. I tend to believe it will become a "problem" but won't suddenly tip into disaster as the earth will dampen the effects to some degree as will the agreements. What we are doing with the Paris agreements and subsidizing alternative energies and gradually capping and reducing emissions will probably be enough to prevent a disaster scenario though we will have a warmer earth, higher CO2 levels, and higher ocean for awhile.
Already alternative energies are taking over more and more of the grid so progress is being made. If we suddenly made regulations to cut emissions by half, for instance, we'd cause a market crash and skyrocketing energy prices. It takes time for change to occur but we are doing it. Don't let to vocal idiots scare you. Even in the US progress is steadily being made by many engineers who know and energy crisis is coming and are pioneering new tech so when it becomes cost effective the switch can be made. For now, the most mature reliable tech we have is nuclear but due to public fear about that it has not progressed to more then 20% of the US grid and is actually being reduced. Whereas in France 90% of their energy is nuclear thus they have very low emissions. If you want to make rapid progress on reducing emissions spread the word that nuclear is a good option, otherwise wait patiently because the other techs are going to take time and stuff like solar/wind can only be about 30% of the grid and are actually encouraging the building of new coal/gas plants as you need a large part of the grid to be something you can turn on and off quickly and produce constant power and solar/wind can't do that.
"The models used to predict it have so far failed to predict even 3 years in the future accurately" - False
"If we suddenly made regulations to cut emissions by half, for instance, we'd cause a market crash and skyrocketing energy prices." - False
"If you want to make rapid progress on reducing emissions spread the word that nuclear is a good option" -False
"the other techs are going to take time and stuff like solar/wind can only be about 30% of the grid and are actually encouraging the building of new coal/gas plants" -Completely false
So where are those models you're looking at?
Technically the title should be "How studying Venus saved the human race from self extinction". We didn't save the planet, just our own hides... again.
Saving the planet, would be something like 'ejecting the planet from the solar system just in time before it's star explodes.'
Or getting rid of the humans ;)
NameHierEinfuegen you don't save the planet by killing of humanity, since humans are not destroying the planet, just making it uninhabitable for humans. Would you say that Mars is a destroyed planet...or that the earth would be destroyed if it was the same as Mars?
No I wouldn't consider Mars destroyed, just dead. If we manage to make a Venus out of Earth I would say we pretty much killed the planet, but it's more probable that we just kill ourselfs and Earth as well as life goes on without us.
This is the message that should be brought home. That we are pushing towards our own extinction. We should be trying to save ourselves and our future generations.
This planet has faced worse than this species. And although we'll take a lot if other species down with us, the planet, and the life that remains, will easily carry on without us.
0:42 "the strongest asses in the world can't break them"
omg i heard this too
same
Einherjar Viking I scrolled by and read your comment right as she said it and it made me hear her say 'asses'. lol
Einherjar Viking lol
Einherjar Viking dammmn it, I literally wrote exactly that and then saw your comment
The views literally say "1 view" right now.
...I might watch too much SciShow
Sophie the Jedi Knight Is that a thing?
Touche!
they said 2 right now
So far, this is the best way of saying "First!" that I have seen. To thee, Lady Jedi Knight, I give both a "Like" and applause.
+Jason Akers we get it you are a virgin
New favourite word: Chlorofluorocarbons.
The best thing about Caitlin is that she explains the topic of a the video as if she is telling a good friend a story. My favorite host, 10/10.
Lets not overstate things here. Earth would have been just fine. At worst, a good percentage of species would have gone extinct, along with humans, which would have put an end to CFCs production and allowed ozone to be replenished. A few million years of evolution after that and Earth would have been back to its old luxurious self.
yup. And without humans, biodiversity would flourish again. hurrah.
Francois Lacombe
hello who wants to go extinct!!!! so she's not talking about just the planet she talking about the human race saving itself
kevin, that went over your head.
Or we humans could have gained superpowers through mutations :oP
what makes you think earth is a stable system
I'm getting Déjà vu
2nd times a charm.
Animatrix I need to take a run in the 90s
Why did they take down the first video?
Timothy Zorn There could have been a typo in the original video that they had to fix
Earth used self destruct! it's super effective!
And then there is Donald Trump who thinks this stuff is fake.
Apparently he lives in an airtight bubble, which really explains a lot.
It's fake, you people are just free zombie for the globalist and jihadist.
donald should be put in a soyouz spaceship and send into the core of jupiter.
maybe someone can share this video to him? a lot of times?
a_traktor13579 No, he thinks global warming isn't the d day it's made out to be. He's said nothing about cfcs.
The guy who invented CFC's is the same guy who invented leaded gasoline. His name is Thomas Midgley Jr. and he's the freaking worst.
Both products came from General Motors and both were defended by questioning science. Yeah, GM claimed for decades that the lead build up in humans was natural and not a problem. Some of the same arguments against global climate change action. GM sold the Ethyl Corporation in the 60s, probably due to liability concerns, but they had been poisoning the planet since the 20s. Thanks GM!
Raymond Smith Hey guys! Someone watches Vsauce
I watch Tom Scott's Citation Needed not Vsauce
Just because he invented them doesn't mean he was a terrible guy. The terrible people are those who ignore or deny evidence so they don't have to stop using said inventions
His third invention did wonders for the environment, because it killed him.
I was born the year that they discovered the hole, so it was a big thing throughout my childhood. The hype died down in middle school, and by high school, we had basically forgotten about it.
It's weird that the phrase "the hole in the ozone layer" brings me back to my early years.
this girl is cool
I like her dress. I want it.
She "sounds" nice to my ear 😉, I'll watch her videos.
her mannerisms annoy me idk what it is
Big Dee Lol. You made my day.
I like her, but I get what you're saying. It think it's the gesturing combined with the head tilting and piercing eyes. It's a tiny bit unsettling. But I'd totally listen to her for hours.
I feel like Venus shows the past of Earth, a burning hell hole, and Mars is the future of Earth, dried out and dead.
this is a good example of something to bring up when a climate change denier makes the statement we couldn't affect the climate in drastic ways
+Andrew Tataj....Yeah....Weird isn't it? The very same people who tell is it's impossible to build a simple wall along the southern border; the very same people who tell us we can't fight islamoterrorists militarily because that just brings in new recruits....Are the very same people who tell us we can, in fact, change the very heavens....by one-fifth of a degree Centigrade in 83 years. Strange days, indeed.
But hey, look on the bright side, The USA is just 4% of the world's population....So feel free, other countries, to go ahead & "save the earth." You leftists have been belittling The USA for many decades now anyhow. So it oughtta be a cinch for ya'll to save her without our help.
I wish you the best of luck (in bankrupting yourselves via your latest version of the Piltdown Man, & only making America more economically competitive in the process).
^
lol
Soldierboy54b *almost 1.5 °C
"strongest ASSES in the world can't break them"
why tf should we care about the planet if we can at least make a qucik buck out of it . Business Logic
XpunisherX8152 and also make a planet a gigant desert...
or ocean world
0:44 "Strongest asses in the world can't break them"
Great, we should be studying uranus next!
This is exactly why we need basic research. A lot of people say stuff like "Who cares about outer space, we should fix our own problems, this is a waste of money"... but fundamental research has implications for everything, in ways you can't even predict.
I agree
Anyone else hearing a background hiss in this video? I don't get it in others.
ESA's Venus Express spacecraft has discovered an ozone layer high in the atmosphere of Venus. Comparing its properties with those of the equivalent layers on Earth and Mars will help astronomers refine their searches for life on other planets? (6th October 2011)
That was a good reminder for my cynical self that humankind is indeed capable of taking research findings serious, favouring medium-term ecological concerns over short-term economic interests, and acting globally to prevent a environmental crisis.
Is planet Earth growing in size or decreasing in size?
This video that can be understood by elementary school kids, should be on repeat to any conservative policy maker's playlist (instead of the conspiracy theories and cult propaganda they listen to), until he or she reaches the mental maturity to comprehend and reflect on their life's choices.
So how do we apply what happened with this issue to raising awareness and credibility with our politicians and such about global warming? because it's an extremely similar pattern.
the guy who invented cfc's is the same guy who thought putting lead in gazoline was a good idea (reduced knocking) daim ! :)
Can you guys talk about what other Space Agencies are doing?
Tathagata Mondal +
Damn UV ruining what would otherwise have been a perfect molecule :/
Omg this is intense. I’m getting chemistry class flashbacks. Breathe lady!
Yay Venus. We kinda like our planet.
Venus is cra cra
wolf charmer huh? speak English for god sakes
if only we had learned to listen to scientists warning us about environmental danger...
Question. If you could survive the heat and other deadly effects. Could you stand on the Sun or other stars? Or would you sink into the surface?
+
I am also curious, what play does the magnetic field play on CFC's? We have a huge hole in our magnetic field too, but nobody is talking about it.
Next Earth Day, we should tackle Global Warming by all standing outside & emptying an old spray can.
This video has a weird audio effect: every time she speaks there is an increase in static noise. I just went to another video to make sure it was this video and not my speakers. Maybe check int this for future vids SciShow?
Carl Sagan mentions this in his book 'Pale Blue Dot'. Its in the chapter, 'Exploring other worlds, and protecting our own'. Sagan wrote this book in 1992. The scary thing about CFCs is that all this was discovered by two scientists from UC Irvine in the late 80s. Sometime accidents are a good thing. 😱😐
What if Venus had a civilization that made the same mistakes we're making now?! I know that's a pretty extreme long shot. But those CFCs on Venus had to come from somewhere....
Apparently we still desperately want to become the second Venus. Because Trump's feelings were hurt by Macron's sexier handshake.
So when you throw huge numbers and volumes in your video, what percentage is that vs atmosphere?
What a splendor grace from our beautiful goddess Inanna/Ishtar/Hasthor/Ashtaroth/Aphrodite/Lucifer!
Actually there is one replacement for CFCs in the electronics industry which is pretty benign. Tetrachloromethane and TriChloroTriFlouroEthane were used for decades universally as a cleaner up till about 1990. Then someone figured out that of all things orange and lemon oils worked well for removing flux. I was one of the engineers involved in the trials for one company.
Since the montreal protocal they have been fasing out r22, r12 to go to r134a and r404a. As a hvac tech the new refrigerants are hydrocarbons. R134a is being replaced with r600a, which is isobutane.
Send this to anyone who claims to be an “environmentalist”
But they scream out “why space?! Focus on earth!!!“
The more I read and watch about these things, the more I'm convinced we're still alive by sheer dumb luck.
"UV-driven phenolic formation in tree rings has dated the start of ozone depletion in northern latitudes to the late 1700s"?
I don't think CFC are solely to blame...
Can we control where ozone is and is not?
Ozone, a colorless gas that can be good or bad, depending on where it is. Ozone in the stratosphere is good because it shields the earth from the sun’s ultraviolet rays. Ozone at ground level, where we breathe, is bad because it can harm human health.
Ozone forms when two types of pollutants (VOCs and NOx) react in sunlight. These pollutants come from sources such as vehicles, industries, power plants, and products such as solvents and paints.
Girl get a drink of water and hydrate your throat. Your voice kept cracking. Also, I know your excited to talk about science but slow down. You’re face was getting so red from you not taking a breath. Relax.
I wanna see some thumbs up for Halogen lovers! Most interest coloum of chemicals in the world. :)
Caitlin, it's wonderful to see you hitting your stride! You seem more calm and relaxed than you used to be. You would cause me to feel short of breath through the internet with your fast nervous sounding speech! xD
But I love this style of yours here. A bit more calmed but just as passionate about science. You're awesome!
This explained a mystery to me. I always wondered how we were so fast to fix the problems with CFC's and so slow to acknowledge climate as not being a hoax. Turns out, some things never change.
I was expecting maybe Venus prevented an asteroid or shielded Earth from some electromagnetic storm to avoid an extinction level event. XD. But I guess this is cool too! :)
Love your show and please keep it up..
However, please wear more professional clothing and not a nightgown when presenting as a host.. SMH....
fun fact at one point the U.S. govt. offered money to manufactures who disposed of there CFC's responsibly however, this caused the businesses to purposely create more so that they could destroy it and get the money. When the govt discontinued the program the companies dumped the excess chemicals into the air.
Want to save Earth?
*STOP WASTING RESURCES AND TURN OFF YOUR PHONE/PC*
WHY do YOU always WRITE text LIKE this, it's REALLY PAINFUL to READ.
Compared to CFCs, HFCs and HCFCs have an almost negligible impact on the ozone layer, but they're still potent greenhouse gases.
Think we'll find Teflon pans on venusian ruins?... and Teflon research tablets that state climate of is not venusian made, but natural...?
That old guy from Independence Day finally makes sense to me now! Thanks SciShow!
Just had my exam on atmospheric chemistry a couple of weeks ago, this video would have helped before that :D
0:42 "The strongest acids in the world can't break them." That is inaccurate. Some superacids can break them.
oh boy reupload
As I watched this video, it brought back memories of me having done a research on CFCs back in high school.
Hey Scishow Space, could you let the main Scishow channel use your host? They have some problems over there.
bookmark this video, it's going to be great for the "why we spend money on space when we got so many problems on earth!" people in your life
We're still trying hard to destroy the biosphere; we just changed it up to a little slower plans.
"Saved" is a little premature considering the latest devolpments in climate politics, don't you think?
HFCs used now are tightly regulated in refrigerant industry but read on your spray on deodorant, hair spray etc cans, they all use HFC as propellant and we use them every day releasing tons of it into atmosphere
@Yunas Guardian I think you're commenting on the wrong video. Lol
But Teflon isn't a *chloro*fluorocarbon. It doesn't have any chlorine in it.
And we look at Venus' runaway greenhouse effect, and doesn't learn anything down here on Earth xDD
Venus suddenly contends Neptune as my favorite planet. Venus has always been a close second, but...
the amount my ears perked up when I heard "McElroy" is honestly worrying
Caitlin is one of my fave hosts
Its cool when someone is excited about what they're talking about, it makes it easier to retain information
We need a chemical which can safely react with and neutralize Chlorine radicals in environments with UV radiation.
Looks like you managed to settle into your groove. This episode was perfect. Keep it up.
I wish Caitlin spoke a bit slower and clearer. I like her enthusiasm, though.