Remix.run Logo
formvoltron 4 hours ago

How do we get Earth back to something resembling the steady state we know can work long term?

1. Electrify almost everything that can reasonably be electrified.

Move quickly to EVs, and replace anything that can practically become electric with an electric version. Self driving & fleet utilization will push transportation cost per mile lower than ever before.

For the power grid, data centers, and other large 24/7 consumers: solar + wind + battery storage. Deep geothermal also looks interesting.

Build lots of desalination capacity.

Maybe even planes can eventually be electrified. Imagine shorter hops with battery swaps at sea (aircraft carrier sorts of things). Too crazy?

2. Deal with the things that are much harder to electrify.

Cargo ships.

Long haul aviation, if the electric plane idea really is impractical.

For those, we can turn energy + CO2 into liquid fuels, creating something closer to a closed carbon cycle.

3. Remove excess CO2.

CO2 persists in the climate system for 200+ years, so getting emissions to zero does not necessarily return atmospheric CO2 to previous levels.

We will need to remove enough to be net negative & over time bring it back down to the CO2 levels we know worked long term.

That takes energy. Fortunately, solar + wind + storage are cheap enough now & getting cheaper.

4. Find places for all that solar.

Deserts are obvious.

Floating solar could potentially contribute.

Agricultural land is interesting too. Agrivoltaics can sometimes provide useful shading while still allowing crops to grow.

5. Deal with the transition period.

Once we are making a serious transition toward decarbonization and carbon removal, it may make sense to investigate temporary solar geoengineering, such as injecting reflective aerosols into the stratosphere, to partially counteract warming while atmospheric greenhouse gas concentrations are being brought down.

The purpose would be to stop the feedback loops such as more forest fires, thawing permafrost, and loss of ice and other reflective surfaces.

Obviously geoengineering has major risks and should not substitute for reducing emissions. But as a temporary bridge, it seems like something that deserves serious research.

We can do all this.

None of it requires magic. We already have, or can plausibly engineer, most of the pieces.

tmountain 25 minutes ago | parent | next [-]

This all sounds good, but the Government of one of the world's primary super powers (The United States) is currently unwilling to participate in fighting climate change, so any plan seems DOA without a major policy change on that front.

normie3000 3 hours ago | parent | prev | next [-]

0. stop eating meat?

mykowebhn 3 hours ago | parent | next [-]

Agreed that would help, but even if everyone were to eat, say, half the amount of meat they would normally eat that would be huge.

znpy 3 hours ago | parent | prev | next [-]

Non-issue

sleepyguy 3 hours ago | parent | prev [-]

No....because it would make no difference.

https://youtu.be/sGG-A80Tl5g?si=dAqbVb9JV_uzLRl1

manmal 2 hours ago | parent [-]

That video is quite biased. Just tell your clanker to critique it. It will point out that those numbers are quite cherry picked, and leaving out important details. E.g. the „GHG would reduce by only 2.6%“ study assumes that all crop production stays the same, which doesn’t make any sense.

fallingbananna 3 hours ago | parent | prev | next [-]

Aren't there way more factors than just energy, industry and transportation?

Agriculture is a huge pollutant, so we should take steps towards alternatives that don't require large scale animal farming.

Fashion is another gigantic pollutant, where fast fashion generates and discards more clothes than it is feasible to wear.

etc.

pvaldes 3 hours ago | parent | prev | next [-]

6. Jail arsonists and harden the laws to protect natural resources from greed and sabotage.

youngtaff 2 hours ago | parent | prev | next [-]

If we move to an electric future then the number of cargo ships should decrease

Something like 40% of all shipping is moving hydrocarbons around the globe

eldaisfish 3 hours ago | parent | prev | next [-]

this tech bro utopia ALWAYS ignores relatively basic solutions. A great example is reliable, regular, and efficient public transit. We don't need self driving cars and all that mumbo jumbo. A bloody train, tram or a bus would solve most of these problems.

tdrz 2 hours ago | parent [-]

This! I live in Western Europe and have never owned a car. I mostly travel by public transport or bike. I rent a car about once a year, but could do without that as well. Before people tell me that I am an exception: I know other people like me in various other places in Europe! It is possible and actually good for your body to have to move, at least to the train station, carrying groceries etc.

headsman771 2 hours ago | parent | prev [-]

The Earth has never been and will never be in any kind of steady state.

IshKebab 2 hours ago | parent [-]

It was in a much steadier state for hundreds of thousands of years before the 20th century. Don't be obtuse.

headsman771 an hour ago | parent [-]

It goes through periods of slow change and periods of rapid change, with regional variations. That will never change. The climate cannot be controlled precisely by humans. To think otherwise is just a comforting lie people tell themselves.

The vast majority of people concerned about climate change think there is some paradise we could have kept if only we hadn't been so "climate-sinful". It's uncomfortable to contemplate that the world is changing uncontrollably around you.

IshKebab 4 minutes ago | parent [-]

Wow dude. I'll just assume you genuinely don't understand this... So the TL;DR is that except for events like supervolcanoes and dinosaur-killing asteroids, no it does not go through periods of change that are this rapid.

You might be misled because you can find graphs of global average temperate that swing wildly by like 10C-20C. But look at the X axis, it's in hundreds of millions of years. Stretch it out to 100k years and it will look perfectly flat.

And yes there is some climate paradise we could have kept it we hadn't emitted so much CO2. The one where it isn't 50C in Baghdad and Europe isn't a dust bowl. Could we have kept it for 100 million years? Maybe not! But nobody is saying that. We could have kept it for 100k years, instead of like 100.

It's comforting to imagine it isn't a problem - both from an "I'm smarter than everyone else" perspective and "I don't have to worry about it", but you're lying to yourself. I dunno lots of people are happy to lie to themselves (at least 50% of religious people I reckon) but I can't do it.