this post was submitted on 05 Feb 2025
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Summary

Renowned climate scientist James Hansen warns that limiting global warming to 2°C is no longer possible due to underestimated climate sensitivity and reduced sun-blocking pollution from ships.

His study suggests warming could hit 2°C by 2045, increasing extreme weather and accelerating ice melt. The research challenges IPCC models, arguing for a higher climate sensitivity estimate.

Hansen calls for carbon taxes, nuclear energy, and geoengineering research.

He warns of an Atlantic ocean current collapse within 20-30 years.

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[–] [email protected] 74 points 1 month ago (2 children)

Spoiler Alert: Look around you. Humanity is not going to address this issue. Enjoy your life and if you have kids, let them know their futures and their kid's futures etc are going to be progressively bleaker.

[–] [email protected] 12 points 1 month ago (3 children)

You dont know the future and you dont know what hope is left. Stop being such a defeatist. Either do something positive or go smoke some weed or something..

[–] [email protected] 35 points 1 month ago (2 children)

You dont know the future

Nope. But I know humanity and I've picked up a history book.

Again, look around you. Look at world politics. We're moving in the opposite direction of addressing climate change. As long as money is our prime motivator, we will keep acting in direct opposition to the wellbeing of our planet. And, another spoiler alert, money is going to be our motivator for the foreseeable future. Probably forever. We will only address the issue when it seriously affects every man, woman, and child on this planet and by then it will be far too late.

Humanity was always going to destroy this planet on a long enough timeline. It was inevitable. I'm not a defeatist. I'm a realist.

[–] [email protected] 7 points 1 month ago

Agent Smith was right

[–] [email protected] 1 points 1 month ago

None of this you can actually backup with proof. Its just your gut feeling because you are afraid to get up and take responsibility. You just need a excuse for your inaction.

[–] [email protected] 9 points 1 month ago (1 children)

No, but it's easy to predict given that the trends of the last several decades can show where we'd be in the next and the trend is: global temperatures are fluctuating more violently than the year before and occurrences of extreme weather are increasing. Additionally, nothing has been done during that time to reduce the impacts globally.

It's scary but, let's face it: we're a virus that's killing our host.

[–] [email protected] 1 points 1 month ago

Only the people who sit on their ass all day are the virus. Just be honest and confess your just to lazy to even try and make a difference.

[–] [email protected] 6 points 1 month ago (1 children)

I choose the second option. Can I borrow $20?

[–] [email protected] 2 points 1 month ago

Let's split the bill. I'll chime in 5

[–] [email protected] 8 points 1 month ago (2 children)

when i was a kid it was 6°C by 2100, but we have reduced this trajectory to 2.9–3.4°C

[–] [email protected] 6 points 1 month ago (1 children)

may be, but with the feedback loops fully contributing then, the 6°C goal will be delayed a few decades.

and by the way, the political was to stop it at 1.5°C by 2050. nobody ever assumed 6°C an acceptable outcome.

[–] [email protected] 1 points 1 month ago

I'm just showing that we are lowering the projection curve due to our efforts. 2 degrees is too hot by far but progress is being made, we aren't just ignoring the situation.

[–] [email protected] 3 points 1 month ago* (last edited 1 month ago) (1 children)

Yeah... I dunno about that. The 2C was in An Inconvenient Truth, unless my memory has completely failed me. I think that's when we hit the point of no return, and the "dominoes" start falling.

[–] [email protected] 50 points 1 month ago (3 children)

We either become mole people, dolphin people, or space people

Maybe oxygen clubs will be the new thing in 50 years to get out of the smog/humidity

[–] [email protected] 20 points 1 month ago (1 children)

Maybe oxygen clubs will be the new thing in 50 years to get out of the smog/humidity

Too late, these exist:

https://en.wikipedia.org/wiki/Oxygen_bar

[–] [email protected] 16 points 1 month ago (5 children)

Okay my next big idea is the bodega van. Instead of an ice cream truck for kids it's a convenience store for adults in the suburbs. It's 6:47pm and you're out of milk, tissues, and you forgot to buy broccoli for your dinner. Oh shit it's the bodega van music. Brb, gotta walk down the block instead of spend 20m in a car, parking lot, store, line, back. As long as the margins are less than doordash it's worth using.

Cmon please tell me I have one original thought in this wide world.

[–] [email protected] 8 points 1 month ago (1 children)

Sorry we had grocery buses in Finland driving out to villages at least since the 80's. Not sure if they exist anymore

[–] [email protected] 9 points 1 month ago (1 children)

How about some sort of hot dog helicopter?

[–] [email protected] 4 points 1 month ago

And veggies. Repurpose the heli to mass produce chopped salads from the sky

[–] [email protected] 4 points 1 month ago

the bodega van music

hmmm... maybe "We Like To Party" by Vengaboys

[–] [email protected] 2 points 1 month ago

God... I actually want this.

[–] [email protected] 2 points 1 month ago* (last edited 1 month ago)

We had those for decades in the Netherlands. They were literally small supermarkets on wheels. They had a limited assortment on board, but you could order specialty items for delivery next week. They were reasonably popular in the 70’s and 80’s, even in larger cities. Those days, there were fewer supermarkets and they tended to close at 5-6 pm. They also didn’t really do delivery like we have now.

They are still around in a limited way, but usually only for small villages that don’t really have a supermarket.

Here’s a modern example.

[–] [email protected] 2 points 1 month ago

We need ice cream truck reform first. The damn things never stay still long enough for me to catch them

[–] [email protected] 6 points 1 month ago

Yeah, or just dead people.

[–] [email protected] 3 points 1 month ago

Apparently some of us “dril baby drill” and we’ll make those profits when we get there

[–] [email protected] 47 points 1 month ago (2 children)

Wow, wasn’t it just last year when they took the 1.5° target off life support and called it?

Now the 2° is dead? Are we killing off 2.5° by summer?

[–] [email protected] 30 points 1 month ago

Last year there was hope that the US will at least not get worse.

[–] [email protected] 12 points 1 month ago (1 children)

lots of folks said it was not going to happen. Last year was really recognizing there was absolutely no way its happening because it had actually passed it already so there is no way we were not passing it as we have. you will see something when we pass it about how now its impossible not to im sure soon enough.

[–] [email protected] 11 points 1 month ago (1 children)

The scary part is that seems to make no difference (to people, corps, countries). Has anyone changed anything based on passing that target? Will the anyone change their minds or behavior with this new projection?

Maybe I’m just cynical with the disaster of the US elections - we were finally making a little progress, finally had reason to hope, but we just threw that away

[–] [email protected] 9 points 1 month ago

I still can't get the hanging chads thing and how different it would be if gore had been president for the start of the millenia.

[–] [email protected] 22 points 1 month ago (1 children)

Not a shock. We have not done enough.

[–] [email protected] 20 points 1 month ago (1 children)

If your mean "we" as humanity, yes. If you mean "we" like you and me, then no.

The main responsible didn't do enough and that's not us.

Only a few decided to ignore all the warnings, so money could be made.

[–] [email protected] 10 points 1 month ago

I mean. We didn't kill them yet though.

[–] [email protected] 20 points 1 month ago

Will this affect Mark in his bunker? If not, not sure why I’d care!

[–] [email protected] 20 points 1 month ago (1 children)

Pfft, gulf of Amerika will solve it!!

[–] [email protected] 20 points 1 month ago* (last edited 1 month ago)

*gulf of AmeriKKKa

[–] [email protected] 15 points 1 month ago (1 children)
[–] [email protected] 8 points 1 month ago

That's what I'm missing - we knew decades ago what happens after we hit 2C...

This, just like the current US collapse, it is just maddening to look at. Watching the bus drive off the cliff without even stepping off the gas and nobody batting an eye... I don't know how much more I can take.

(not an american btw)

[–] [email protected] 12 points 1 month ago* (last edited 1 month ago) (1 children)

Some good news:

  • ~~emission rates have plateaued; we are still destroying the planet, but no longer accelerating the rate at which we do it~~
  • Solar panels (unsubsidized) are the cheapest method of electricity generation as of 2022
  • there is a fundamentally limited amount of fossil fuels, so as long as we don’t turn to Venus 2.0 by 2100 we will deplete most coal and oil and it will be possible for our ancestors to repair the planet over the following centuries.

Yeah I know even this “good news” is bleak, but it’s worth celebrating. There is some hope.

[–] [email protected] 1 points 1 month ago (1 children)

Are those emission rates per capita or absolute?

[–] [email protected] 2 points 1 month ago (1 children)

I saw it originally watching Simon Clark. Reviewing, it looks like the chart shown is actually a great example of a terrible graph; it uses 5 year periods then switches to 1 year periods without clear indication, making it look flatter than it would otherwise. If I adjust for this in a photo editor, emissions have barely slowed. I was misled, sorry for passing that on and thanks for questioning it.

https://ourworldindata.org/grapher/annual-co2-emissions-per-country?time=2000..latest&country=%7EOWID_WRL

[–] [email protected] 2 points 1 month ago

Good on you to have integrity.

But yeah, that's what I gather, too, whenever I check. Nothing we do has an impact. I'm hoping the huge renewables push in China over the last few years might finally have an effect, but :(

[–] [email protected] 9 points 1 month ago* (last edited 1 month ago)

In before we hit 2C by 2030

[–] [email protected] 9 points 1 month ago (1 children)

Look, the only way for this to end is for humanity to die. That's it.

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[–] [email protected] 7 points 1 month ago (2 children)

We should put research into stratospheric aerosol injection. We need an insurance to limit climate change if emissions don't go down fast enough.

We know it works, and it's at least not catastrophically unsafe as we have already done it with container ships, and seen it happen at bigger scale with volcanic eruptions.

[–] [email protected] 3 points 1 month ago (1 children)

Let's fix the environment by fuckin it up more.

[–] [email protected] 4 points 1 month ago

We have been fucking it for centuries. And by the looks of things, that's not stopping any time soon. I'd rather we have something we can do besides hoping that certain people decide now's the time to seriously address climate change.

[–] [email protected] 1 points 1 month ago

100% This, and also microbubbles in the ocean

[–] [email protected] 1 points 1 month ago

Reminds me of a scene from The Newsroom

https://www.youtube.com/watch?v=pNYp6oc37ds

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