Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.
As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades:
How much each change to the atmosphere has warmed the world:
Recommended actions to cut greenhouse gas emissions in the near future:
Anti-science, inactivism, and unsupported conspiracy theories are not ok here.
Positive feedback loops, how do they work?
We've known about this for decades. An example: heating causes permafrost to melt releasing CO2 and methane, which cause more heat to be trapped, which melts more permafrost, which releases more green house gasses, etc.
Positive feedback loops tend to be very unstable, and can lead to runaway situations.
Can't wait for all those ice caps to go away and stop reflecting all the heat that they do reflect being white. It'll just add to it.
And when the last ice is gone we will finally have revenge for the Titanic
Hey I found time to laugh in between my doomsday crying.
Thanks. :)
Looks like it might be a good idea to paint sections of buildings black and white, colour coded for heating lol
We actually paint the top of some helicopters to make the ride cooler for everyone inside.
Worse, when that influx of arctic water shuts down the North Atlantic current and others that cycle heat and cold throughout the world. That will be very bad for quite a lot of us.
Can't wait until we turn the planet into Venus 2.0
Ive read somewhere that living in the clouds is in theory still possible. :)
I'd like to live on the ground with the grass and the trees, thanks
"go touch grass" will be the new "kill yourself" in a century 😂
As much as this news disturbs me .... the thing that disturbs me most is that most of the world will ignore it.
Humanity won't do anything about any of this until millions die and mass migrations start happening due to extreme weather events.
COVID was the perfect microcosm for climate change action. COVID killed a shit-pile of people really quickly. Humans are wired to acknowledge pressing matters (like a pandemic), while more abstract concepts, and things with delayed consequences get pushed to the wayside.
It make sense, why we are the way we are. Who cares about where your meal next week is going to come from, when you're a caveman running from a lion?
Does it make us any less dead? nope. Just the timing is in question.
Humanity won’t do anything about any of this until millions die and mass migrations start happening due to extreme weather events.
We won't do anything even then.
Well, not anything that'd help, at any rate. The worse things get, the more people will vote for conservatives and populists who will sell them easy solutions, which will likely consist of mass violence and rolling back environmental regulations because they inconvenience their voters. The only thing that will actually help will be the inevitable collapse of industrial society at this scale, but to get there hundreds of millions if not billions will die pointless deaths, especially if nuclear weapons are involved in the collapse.
At this point I want collapse to hurry up so that the old fuck boomers have to deal with it.
We've discovered the breaking point of paradise. Hope the next sentient species is a little less selfish.
Unfortunately, I don't know if it would be possible for another species to reach our level of technology or civilization. We built up our society off of easily accessible energy resources (surface-level coal being our first source of industrial energy). This energy excess allowed us to develop other sources of energy, solar, wind, nuclear, etc. But if you tried starting from zero again, you could never get to this point, at least along the same path, as you need a high level of technology to access any available energy resources. Thus, if any new species took our place, they could only ever rise to the level of the pre-industrial revolution.
At the very least, even basic electricity production requires copper windings. Which requires copper wire. Which requires refined copper. Which requires copper ore. Which requires copper mining.
Generations of people with manual tools will need to die in the mines for enough electricity to be generated to run a small medical clinic, let alone get post-climate humans to a point of modern civilization.
While it's definitely bleak, it's not quite as bleak as that. Remember that we're leaving behind vast amounts of 'waste', much of which contains things like copper, aluminium, steel and other useful components in relatively easily refinable states.
Future civilisations will be digging through our waste, wondering why we were so profligate, but glad to have it all to hand.
I had thought about this scenario before too, but now I can think of many other scenarios where this doesn't happen.
Examples: a complete loss of most of humanity's technological know-how to where we don't even know how or why use those materials, loss of knowledge of where many of these (mostly difficult to harvest?) resources are buried, and warring between factions for access to these resources. Not only each of those scenarios individually, but also a combination of all of them plus other factors working against this happening.
I think that the eventual best case scenario for humanity will be going back to pre-industrial living and technology.
Those are fair points, but consider that they just put the next civilization at the same level we were; we didn't have the technological know-how until we invented it, we didn't know how or why to use different ores until we worked it out, we didn't know where the ores were to be found until we gound them, and harvesting pre-refined material is much less intensive than that, and well, we've warred, and continued to war over access to resources.
Basically, we've dug up lots of the easily accessible ore, which has a low density (you need to dig up maybe 4 tonnes of rock to get a tonne of iron ore, and that is only between 50-75% iron, for instance) and buried it more shallowly, and at higher density. There's still work to do to extract it, but it's manageable with fairly low tech.
Energy sources are a little more complex, but we've bound up a lot of hydrocarbons in plastic and the like, which should be usable, if not ideal in their raw form.
Those are good points too, that I hadn't thought about. I thought it would be challenging, but maybe it wouldn't be as challenging as I had imagined it.
But who knows, maybe we would be better off going back to pre-industrial times anyway?
But who knows, maybe we would be better off going back to pre-industrial times anyway?
But how would I find interesting conversations on Lemmy if my highest tech gadget was a loom?!? :)
Haha, we would have to go back to the printed press and handwritten letters!
That's a good thing, right? The vast majority of the results of technology and "civilization" has turned out to be nothing but a curse on this planet.
To an extent, but we have the chance of transitioning into a solar and wind society and remediate that damage. Subsequent species would not have that potential.
I wasn't even talking about subsequent species, but our own species in the future. As for solar and wind, I'm afraid that the way that population growth and energy consumption growth interacts with the material requirements for solar and wind, that is also going to hit a wall in the not too distant future.
Perhaps if it’s a few million years later and all us dead humans have turned into coal and oil, like the dinosaurs of the past.
Im quite confident that this takes a few hundred million years until we talk about usable quantities.
Heating is accelerating. IF we stop adding greenhouse gases to the air, the heating should stop. It won't go back down without removing massive amounts of CO2, though.
IF we stop adding greenhouse gases to the air, the heating should stop.
Unless we crossed a tipping point. If so, the heating could continue although we stopped.
It won't stop unless we also remove the greenhouse gases that we put there
Unless I misunderstood, the article claims otherwise.
Yes, net zero, which some companies and countries pledged to reach until 2050. Unfortunately it's delusional, because they count on technological fixes being invented in the future and until then it's "business as usual".
Industries like cement, chemical and steel will never be net zero without carbon capture for example.
Organic plant based cement is already a possibility, yet we're still using the good old mixes purely to avoid change
The atmosphere stores negligible heat (only weather, not climate), but the ocean has a much greater capacity than the atmosphere, for both heat and CO2 (mainly in the form of HCO3-), and it takes a long time (centuries - millenia) to fully mix the ocean. Also it takes ages for icecaps to melt. If you really stop adding CO2, concentration in the atmosphere will go down slowly as it mixes into deeper ocean, but not back to preindustrial, the surface temperature will likewise go down slowly and partially after a slight lag, but ice will keep melting (-> sea-level rises) for a while. Other gases and aerosols make short term response more complex.
There's no rule of thumb that summarises it, but I made an interactive model - here.
Beginning to think we're going to hit 1.6c next year, not 2050.