this post was submitted on 01 Apr 2024
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Climate - truthful information about climate, related activism and politics.

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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: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world.  About 1C of total warming.  Second chart:  about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability.  Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases.  About 0.5C of cooling with large error bars from SO2.

Recommended actions to cut greenhouse gas emissions in the near future:

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[–] ProdigalFrog@slrpnk.net 20 points 8 months ago (2 children)

I think this was a good video overall, though I do strongly disagree with his recommendation that trying to build a more just and fair world, i.e, degrowth or social revolution, right now, isn't a good idea.

If anything, climate change is one of the most powerful things we have in our favor to make social change happen. To suggest we should tackle that part later, is just kicking the can down the road when there is less desire for rapid societal change.

[–] thejevans@lemmy.ml 9 points 8 months ago* (last edited 8 months ago)

As part of needing to attack the climate crisis from all angles, we must also attack the behavior that got us here in the first place.

[–] TheDemonBuer@lemmy.world 1 points 8 months ago

If he thinks radical, systemic changes shouldn't be attempted right now, that implies that he also thinks the necessary climate solutions are achievable within the existing system. What is basing that on? There is absolutely no reason to believe that the necessary solutions are possible within the existing systems, given that essentially all countries are well, WELL behind where they need to be to meet their own climate pledges.

[–] Scipitie@lemmy.dbzer0.com 9 points 8 months ago

What a clickbait thumbnail :/

[–] felixwhynot@lemmy.world 5 points 8 months ago (3 children)

Can you spoil the video for me please

[–] ProdigalFrog@slrpnk.net 8 points 8 months ago (3 children)

The most cost-effective things that eliminate the most carbon are, according to the research done by Drawdown:

  • Utility Scale Solar PV
  • Improved home insulation
  • Electric cars
  • Bamboo production
  • Distributed Solar PV (home installations)
  • Wind Farms
  • Plant based diets

But I suspect electric bicycles are far better than Electric cars.

[–] exocrinous@startrek.website 6 points 8 months ago* (last edited 8 months ago) (1 children)

They sure are. It sounds like this video is examining these things in isolation instead of looking at the wider social effects that also help counter climate change. For example, if you build houses closer together, you'll not only reduce heating and cooling costs, you'll also reduce the monetary and carbon costs of infrastructure, you'll improve the efficiency calculation of public transit, and you'll make bikes more viable. One change with knock on effects that help three different sustainability areas. One change that literally costs negative money and also helps the environment. How did this not make the list??

Also shooting rich people dead only costs a hunting rifle and some bullets, and it prevents hundreds of private jet flights a year.

[–] blargerer@kbin.social 3 points 8 months ago

The video was analyzing the effects of the costs until 2050. Things like housing density increase slowly so might not be impacted substantially by 2050. Also most of the best solutions have a negative cost projected out to 2050, so no killing people isn't a better solution.

[–] Uranium3006@kbin.social 4 points 8 months ago

That and good rail transit everywhere

[–] felixwhynot@lemmy.world 1 points 8 months ago

Probably “less vehicle miles traveled” aligns with your comment about bicycles

[–] Jochem@lemmy.world 4 points 8 months ago

He summarizes the recommendations from the book drawdown.

[–] Lath@kbin.earth 1 points 8 months ago (1 children)

Spoiler: Dying is the cheapest option.

[–] oo1@kbin.social 2 points 8 months ago

Just make sure that if you decompose into any methane, that someone captures it and uses it as fuel.

[–] oo1@kbin.social 4 points 8 months ago

The covid impact is an interesting example of demand reduction.

In my country the imact of petrol in road and air travel still being below pandemic levels in 2022 (latest data) is about 75TWh less fuel demand. This is almost as big as the output of all wind, solar hydro power gen in the country in energy terms (85 TWh) in 2022, and we've been investig fairly heavily for 2-3 decades now.

For cost effective . ..
Drive less, drive (travel) more efficiently, live closer to the things you need.
Heat less, heat more efficiently. (I live in a cold country so cooling is not something i know much about - apart from it being a natural fit for distributed solar PV).
. . . probably also breed less on a global scale for the long term.

I think the pandemic proves that people can travel less if forced too, they just don't want to, hence the bounce back we've been seeing.
But some structural improvements such as work from home for many office workers have locked in some benefits.

Some of the other solutions have complex feedbacks and infrastructure dependencies though. I don't like utility scale PV as it competes with farmland or other land use like forests / swamps.
EVs and electrification of heat will ulimately double or triple the demand on our national electricity grid - i just can't see renewable elec gen growing to that level even on a 30 year horizon .

We tend to do the easy and cheap projects first, so the next 300% is likely to be more than 3x as hard as the 100% so far. The exponential growth of the last few decades will plateau into an S-curve eventually. I think it already has for PV gen - which despite what this dude said in the videos, seems to need subsidy to drive uptake.
Maybe, unless we re-think hydro strategy

[–] morphballganon@lemmy.world 3 points 8 months ago (1 children)

Do you want to fix the climate before it kills billions of people?

I don't think penny-pinching is going to cut it.

[–] CarbonIceDragon@pawb.social 6 points 8 months ago

The point isn't penny pinching, its more that if you're trying to address climate change, and you have a limited budget (which every organization does), then it makes sense to do whatever will let you achieve the greatest impact with what you have.

[–] SuiXi3D@fedia.io 3 points 8 months ago

Eating the rich, of course.

[–] Deceptichum@sh.itjust.works 1 points 8 months ago

Doctor Simon Clark? He has a phd!