Stop global warming using technology?

Pie in the sky mega projects won’t save us.

Honestly even humouring the idea is frankly dangerous, the only thing it will do is let shitheels kick back and do nothing because it’ll totally be taken care of by X.

Reminds me of all the Liberals (right wingers) in my country pushing carbon capture technology as the solution and undoing all the work done by the Greens.

The "high-tech solutions" were sustainable energy, banning mass animal farms, and regulating industrial pollution.

And even if we did come up with a big tech solution that works for now, literally every business would then think, "Nice, now we don't have to care about our carbon footprint," until even our tech can't keep up anymore and we're back at square one.

I think this is not the way.

It's like with dental care. The solution is not to don't care and think that someday technology will fix it. Instead you should brush regularly, don't eat much sugar and visit the dentist now and then. It's prevention.

We currently don't have any technology that will save us and time is running out. Why bet on a tech wonder that needs to be mass ready in no time?

Instead of treating the symptoms we must address the cause. The cause is CO2 emissions. The solution is to reduce these emissions. Keep the oil in ground as much as possible—we still need some for lubricants, solvents, polymers etc but honestly, burning oil is stupid since it can be used in much better ways. Although we must also reduce the use of single-use plastics, volatile organic compounds and "forever chemicals" as much as possible since these pose real environmental and health risks, too.

We have the technology to address the emissions—photovoltaics, wind, hydro and, yes, nuclear power; everyone can reduce or even stop meat consumption if they want; every city and country can build good public transport and walkable communities; every government can regulate harmful chemicals. The problem is societal inertia, NIMBY-ism, FUD plus outright conspiracy delusions and unwillingness to change from the powers-taht-be.

You are right on human psychology. The big problem with these mega proje ts is who will pay for them? Furthermore, what could try would stifle theor own economy to penalize another?

I wonder how much CO2 would be pumped into the atmosphere from creating a 1 million km^2 mirror? The electricity required just from manufacturing and researching and engineering alone would be immense, before considering CO2 from the labour, material production, putting it in the right place etc.

How much CO2 would be worth paying for how much gain this project would provide? I guess it would be less CO2 than giant air scrubbers would require for power at least.

How do you even maintain an ultra thin film mirror when space has high-speed space debris constantly flying around?

Surely it's clear enough by now that adding fuel to fires doesn't extinguish them. The amount of CO2 needed to build, let alone maintain, a mega-project is just going to be high envirinmental cost, low-certainty reward.

A quick short term implementable solution is to tax companies for carbon footprint. Proper tax, not "oh sorry we have no cash we spent it all on global domination... I mean... operating expenses." sort of tax. The kind of tax which makes businesses pause production like they paused production during peak Covid and made an appreciable difference.

You're talking about geoengineering: https://www.greenbiz.com/article/geoengineering-gathering-momentum-heres-why-you-should-care

And yes, this is the only way we can solve climate change. Not because we can't eventually stop emitting greenhouse gases, but rather it's already too late for such solutions. Climate change is already here and we already past the point of trying to prevent it.

There are a few YouTube videos out there where science communicators (one of them is Kyle Hill) do a few basic calculations on these projects and conclude that it’s impossible.

For example, the mirrors would need to be a swarm of satellites that are launched by hundreds of rockets every day for decades with no pauses.

You might want to look up the law of unintended consequences.

The bigger the intervention, the bigger the potential unintended consequence.

By far the easiest solution to climate change is not emitting greenhouse gasses in the first place. It is still a monumental challenge but if we don't do that, we're just treating the symptoms not the cause

I can comment on air scrubbers.

You don’t need those to be massive. In fact, a diminishing returns effects kicks in at about the size of a large building. You just need a lot of those. Preferably several in every somewhat large city, plus some more on the periphery.

But the current problem with this tech is it’s really energy intensive. So much so, that if you run it using fossil fuels, you’re scrubbing less CO2 than you release, and if you run it using renewable energy, you’re taking it away from other uses, and still end up with net positive CO2.

So the only reasonable way to do it at this stage is to run it using unexportable surplus clean energy, which none of the countries have at this point.

With Mega-Projects, there will be even more procrastination over who is going to pay for the project.

Also, have you heard of the Jevons paradox.

I have read about potentially releasing reflective particles into the atmosphere. Should be a lot easier and cheaper than building some huge mirror. The problem is, we don't know what side effects it could cause down the line.

Sadly the only mega project that might save us is getting rid of unchained capitalism

Reading through these comments is depressing and my only hope is that I will be dead before the droughts lead to food shortages that effect me. I like eating, I like eating good food, I like having good food available when I want it. I don't like being hungry. I hope I'm dead before I have to deal with starvation. At least nuclear war would be quick.

Megaprojects are a pipe dream. We can't even deal with a lowball pandemic together as a nation. What hope do we have of coming together as a world? Let alone for something that isn't going to have immediate consequences slapping us in the face. We're a pathetic society that can't do anything good. All we do is consume. Mr. Smith was right, we're a virus.

We're heading for a post-apocalyptic sci-fi future, and all the horrible shit that goes along with it.

In a fucked up way, our only hope is if a mega power somehow dominates the world through some horrific war and consolidates power, while somehow avoiding nuclear war and then does a quick 180° straight into eco-fascism. That's the glorious future we have to look forward to. Life under a global authoritarian regime with severe austerity measures to deal with global warming. People will starve, people will be executed. The horrors of Stalinism will be our reality, and it is the only thing that can save us from ourselves.

I fucking hope I die, because I wasn't built for suffering.

Edit, it became reality:

USA CO² Scrubber german

Project Cypress english