Thanks for having me on the show Brian - I'm glad my PhD finally became useful!

Best line, "...Sending random shit really high in the sky with a GoPro" Keep up the good work Brian!

*injecting sulfur into the atmosphere* We used the pollution to stop the pollution

Always the Simpson's 🤣

*Gets excited when hearing about some feasible options that we have with our current technology* "BUT. It would rely on Bureaucracy and all countries working together and being disciplined" Aaaaaaaaaand we're fucked

It's funny how it sounds like: The heaters in this house are too hot ... let me start air conditioning to fix the problem

Block out the sun?! Have you never seen the Matrix trilogy?!

And then, along came a mini ice age and wiped out billions of the human race! carry on sonny ❄️❄️

“A chilling report” The irony...

Next: *CAN WE BLOCK TIK TOK*

Earth: *gets warmer* Us: *c o l d*

But who decides, what is optimal temperature on the Earth?

If we decrease our incoming radiation, won't that also decrease our solar panel efficiency and affect photosynethsis in plants?

This video could have really not used an ad at the end. The momentum you were making near the end to be active in the climate change discussion was completely destroyed by the transition into the ad. I wouldn't have mind an ad at the beginning but at the end just destroyed a ton of the momentum you where working at.

The fact that people are ok with blocking the sun shows how stupid and helpless we are to these billionaires wanting to play God.

what happens if another volcanic eruption happens on top of that?

No roast of HAI? I'm confused...

0:09 "a *chilling* report" *I see what you did there*

A successful effort to stop CO2 increase might be the last thing humanity ever does

Please speak about Geo-Engineering. Who is doing it?What are the effects of the toxic chemicals in the air for us? Come up for the soil, for the trees?

Wont that really decrease direct sunlight on the surface of the earth, I'm sure there will be a huge impact on plant life.

9:31 “Someone with deep pockets” and the background is Elon Musk smoking pot. LOL

"Every plant and tree will die, owls will deafen us with incessant hooting...the town's sundial will be useless."😳

"Science isn't about why. It's about why not" Johnson, Cave

"We don't know who struck first, us or them, but we know that it was us that scorched the sky"

Hey Brian, I think you should reach out to Isaac Arthur with this. I think it would be really interesting to listen to a respectful discussion between the two of you. I would really like to hear a (for lack of a better phrase) "setup and fall man" conversation between someone with a hopeful approach to futurism contrasted with someone that has a practical but dystopic sense of our current trajectory. It would be really interesting to hear a practical discussion that has two outlooks while not giving a platform to some idiot that can't accept the reality of human impact on our environment. Isaac Arthur is no climate denier, but he likes to think big and about our long term potential. It would be interesting to hear someone ground those concepts in the "Real Engineering" of today. -Jake

nuclear power: - very cheap power - cleanest power (yes even cleaner than solar or wind) - safest power - less coal power required so less co2

I love that you really take the time to view this arguments and dismantle it in a clear way, completele free of ideology. When i look at climate change i hardly stay cool enough to really take the time to think about those approaches as pushing renewables first is the easiest and most effective approach so i don't even spend time to debunk the other "solutions".

A solid sunshade is unrealistic on many levels and just an overall inefficient way of blocking the sun. A far more realistic way would be to have a swarm of smaller ones, very simple "sails" you can transport in rolls and erect them at the L1. Tether them together to boosters to help stabilize. You dont need them thick, a sheet of aluminium foil is enough to reflect much of the sunlight. The reduced weight make it cheaper to transport and they can even utilize the momentum transferred by reflecting photons to help them keep in position. Also this wont create a distinct shadow with a dark spot, since not 100% of the area is covered, instead just reduces the average amount of photons going through this "swarm". This is not sci-fi, we have had the technology to implement this since the Apollo mission. Another benefit of having thin aluminium sheets is that you dont need to worry about micro meteorites crashing into them as it would only poke a small hole in the sail reducing its efficiency by a fraction but keeping the structural integrity intact. Launch costs are the limiting factor here and their dropping fast. This can be optimized further by having the sails reflect sunlight into a smaller amount of solar cells and you'd have more than enough energy you'd every want out there. On a side note, going 100% renewable would mean no more nuclear power, and with that being the best energy source from, but not limited to, an environmental and climate standpoint really makes me question our leaders intentions/priories when it comes to environmental regulations.

"Let's put millions of tons of acid into the stratosphere" You're just giving Alex Jones that softball, aren't you?

Fall on your sword bill. I will bring the popcorn

One simple step everybody could take to combat the issue of carbon emissions is to start carpooling at every opportunity possible.

I've said before and I'll say it again, can you please do a video about experimental fission nuclear power? There are many more types of nuclear reactors other than the light water reactor. Despite what the media says, nuclear power is the safest source of energy.

1:20 "Incredibly ambitious targets" is one hell of an understatement if I ever heard one. We won't achieve one, let alone all of them.

Right up to the point where we start our own ice age. Then throw up all kinds of mirrors to fix that, and repeat in ad nauseum

Us humans just need to work on ways to eliminate greed! Without it we can actually save ourselves with 100% cleen energy. All green cars, houses, more and more people growing trees and other plants that feed and stop trying to manipulate mother natures force. We dont need to block sol's light! We need to use it for all of our energy! Thats the answer!

"We don't know who struck first, us or them, but we know that it was us that scorched the sky."

I looked in the comments for the inevitable complaint about your "incorrect" pronunciation of Fresnel. I was disappointed, seems they only comment on my videos :->

Or we could just try and replace as many trees as we cut down... Why is a KZfaqr called "Mr. Beast" the only one who seems to have a fucking clue on this topic?? We cut down 15 billion trees a year and only plant 5 billion. That's the core of the issue and it doesn't take a fuckin' rocket scientist to propose a viable solution...

In other words, none of these proposed solutions will work, and we're all screwed😨😨😨

why IPCC won't say that nuclear power will avoid golbal warming? it has emission compared or lower of all renewables energy and much less problems.

Maybe we can blow up the sun?

Deep enough pockets....and the elon musk part was pure gold my dude xD

Right now Im 60. By 2050 I'LL No longer be alive. I give you permission to scatter my ashes as high as possible and I'll do my best to help block the sun. Either way I'll see you in the next world don't be late.

IPCC: Here's exactly what we need to do to to counteract climate change Us: Lets try to think of literally anything besides changing our lifestyle. Consequences be damned, we mean it, we will take any crazy idea that doesn't involve mass conscious awareness and action.

I lol'ed in a coffee shop when I saw that you added the clip of Elon Musk smoking a joint. 👍

I think adding things because we don't want to (or are unable to) remove other things is a recipe for disaster and sounds like a poorly thought out plan that isn't taking into account all the hidden costs. AKA Caine Toad in Australia.

playing around with s**t you don't understand is always a bad idea

4:22 Could be the best explanation of climate change I’ve ever heard

9:30 how about we just get elon musk hammered so he pays for it ??

0:56 all plan,all talk no execution.

I will never submit to a global authority for any purpose.

This sounds like an Isaac Arthur video. That's a good thing.

I remember being little and the weather was always beautiful here in California. On a summer morning the intense heat would reside by nightfall, and on a winter morning we would have to make sure to put on something warm because it was so cold. The grass would always have ice on it and from afar it would look like a white sheet. Oh and the rain, the rain was amazing. It always rained and we grew used to it. Some people miss the sun, but I enjoyed looking up at the white cloudy sky in December and waiting for the rain to fall As soon as we reached fall it was guaranteed that temperatures would already be lowering, and I would walk among leaves of all colors: red, brown, yellow, light green, if I couldn't say it any better I'd say almost like a rainbow. I haven't seen leaves so beautiful for over 7 years. Spring was the most beautiful because I would see the beautiful pink blossoms from the trees and white as well. A decade later and I wake up on a normal day during fall, which is burning in the afternoon if you wear a jacket. It only rains periodically during winter, not consistently, amd spring doesn't even have the nice fresh wind anymore that you can just walk through without a sweater or jeans, and just breathe in the nice beautiful air. What have my kind done to nature?

'We do not know who struck first, but we do know that it was us that scorched the sky'

The Earth is NOT a laboratory!!!

06:43: " Or sending random shit really high in the sky with a Go-Pro for a marketing campaign." 🤣

James Web space telescope is WAY MORE complex than a huge space sail/deflecting mirror.

You are wrong about quite alot. A loose weave sun block shade would be nothing but a very large cloth with a a skeleton of small tubes that become stiff when a liquid expoy is forced in under pressure and then hardens. It would thus expand into square miles. It would not cause a shadow. Small station keeping rockets would occasional fire to maintain position. My calculations using a few heavy lift vehicles indicate a price tag under 20 billion. World goverment is not needed .

The firmi paradox says there are filters that any intelligent life must pass through to become advanced enough for intergalactic colonization. This is one of those filters - and we must find a way to pass it.

Next video: Can we destroy earth to stop climate change?

would surface level reflectors be capable of the same thing? i was surprised how much the reflectivity change of aforrestation altered the temperature? my thought is to take things that have horrible absorbtion rates like massive parking lots and put reflective shades over them, i have no idea where to begin calculating the area of the world parking lots and highways but it would be some percentage and the change from black or grey pavement to something reflective white or silver would be huge

3:45 - 3:56 : the exact *opposite* of a lighthouse - brilliant! Impractical, but brilliant.

If we can't block the sun we can just get Gru to steal it.

I'm still hiding in my garage with a camping stove and a handgun awaiting the Y2K disaster.

We’re still thickening the atmosphere tho.

Vampires: *Interesting.*

Mr Burns approves of this message. Now let’s all go to the lobby, let’s all go to the lobby, let’s all go to the lobby and get ourselves some snacks.

Isn't this just the premise for how humans darkened the sky in The Matrix? We're all so screwed.

A PhD huh, block out the sun you say, huh. LOL

3:40 Man what a difference 4 years of intense pollution does to a governing body or two.

Best part of the vid: Musk with the weed

Many times, Scotland has fully ran off its renewable energies. We need to start with the small countries and work up and up as fast as we can.

Some "solutions" are no more than painkillers. They blind the public from THEIR need to change. People's attitudes need to change. And capitalism kills good intentions.

Georgia guide stones 1.Keep humanity under 500,000,000 in perpetual balance with nature.

That's a very sharp knife.

I'm still waiting for the ice age Time magazine said would come in thirty years, back in 1977.

"I call this enemy... the sun!" -Montgomery Burns

"A single global authority with the power to......" Ya... At what cost though. Thats scary

Injecting gas into the atmosphere Hmmmmm snowpiercer?

Good video. Please tell us more ideas how to block the sunlight? I'm sure there are more ideas, this will be very interesting!

2:30 - the earth gets so old that it needs glasses!

Pollutant vs Pollutant? Well that will cause more pollutant.

I remember a shield being deployed in The Highlander 2. It was a depressing dark sky. It saved the planet but the population was mentally depress.

Didn’t Mr Burns already try this in an episode of the Simpsons?

the biggest question is, how can we change the big polluters like India and China?

Why don’t we make a CO2 vacuum cleaner?

THE BEGINNING OF SNOWPIERCER PROPHECY IS REAL

Thank you for doing a video on this important topic. It's sad that we've waited long enough to act that now we have to consider such drastic measures. I hope that it doesn't also distract us from, like you said in the video, solving the underlying issue as well (otherwise we're stuck with our drastic measures). I recently saw a Vice episode about this and they talked about other drastic measures, some of which seemed a little less scary. For example, making the arctic ice more reflective so that it absorbs less heat, meaning less ice will melt. I'm not an expert on the subject, but if this would have a significant impact, this seems less dangerous because it would only affect the ground in certain areas, not the sky over inhabited areas. Sure, the arctic does have abundant sea life, but I'm guessing this is much less risky than reducing the amount of sunlight hitting a forest or even the ocean. That said, I'm sure the sulfuric acid idea is much easier/cheaper to implement... No matter what, this will most likely require multiple solutions and we all need to take this very seriously.

Not a SINGLE disk! A cloud! A cloud of spinning graphene disks Blocking out 0.1 % of the sun's rays would only weight about 34,000 metric tons and cost about 13 billion to launch. By spinning them would Stabilize their orbit at L1. And it's not 1% you need to block, just 0.1%. A %1 drop in solar energy hitting the earth would put the earth deep into an ice age.

Blocking the sun is much easier than explained here. You don't need a lens. A very thin sheet of reflective material will do. We would not make a single shade but would use millions of smaller ones. light would refract around these shade so they would not be noticeable from Earth. Station keeping is a minor challenge. This is a world-wide project. Cost is not the problem. As far as dumping millions of tons of sulfur into the atmosphere, what could go wrong? With shades, you can turn them off if you don't like the results.

And what has the IPCC track record been in the past? Wrong or inaccurate every 6 years since 1990? Ok let's freak out this time

Yaaay... Let's spray millions of tons of sulfuric accid above our heads. Brilliant idea.

Nothing needs to be changed from the outside but Inside! Don't play with the nature like we have been doing till now. You are not smarter than the creator. And no one can ever be! Everything exist for a reason.

This is selfish only one being can't take the sun and we know who they are.

Aren't we forgetting one eensy teensy detail? Where does the sulfuric acid go when it exists the stratosphere?

Don't forget about nuclear energy!

i like how the subtitles leave out the word "shit" at 6:42 and just skip over it lmao

Just shut congress down for a year. Getting that much hot air out of the atmosphere should solve the problem.

I like the space option more. You do not need a one massive 1000km satellite in the L1 point, you can use a swarm of thousands relatively small satellites. Each of those small satellites would unfold like umbrella or origami, remember we are talking about space, so the material of those umbrellas could be really thin and light. Put those satellites in a loose grid formation to avoid making one solid shadow and presto! It has few advantages, first you do not put crap in the air you are breathing. Second it is easier to model. Third you can precisely control it! You overdid it a bit? Just send a command to turn the satellites a bit sideways so they cast less shadow. It is a way to boost the space industry, develop better cheaper ways of sending stuff into space or even mining and manufacturing outside earth.