Climate - truthful information about climate, related activism and politics.

5330 readers
496 users here now

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:

Anti-science, inactivism, and unsupported conspiracy theories are not ok here.

founded 2 years ago
MODERATORS
1
2
3
 
 

A realistic understanding of their costs and risks is critical.

What are SMRs?

  1. SMRs are not more economical than large reactors.

  2. SMRs are not generally safer or more secure than large light-water reactors.

  3. SMRs will not reduce the problem of what to do with radioactive waste.

  4. SMRs cannot be counted on to provide reliable and resilient off-the-grid power for facilities, such as data centers, bitcoin mining, hydrogen or petrochemical production.

  5. SMRs do not use fuel more efficiently than large reactors.

[Edit: If people have links that contradict any the above, could you please share in the comment section?]

4
5
 
 

6
7
8
9
10
 
 

Maybe EVs are not a comprehensive climate solution??

11
-4
submitted 1 year ago* (last edited 1 year ago) by hanno@lemmy.world to c/climate
 
 

Is green methanol an overlooked storage option for the electricity grid? Two researchers argue that it sometimes has advantages over hydrogen. Storing H2 is often difficult. Methanol is liquid and much easier to store. Combined with an oxyfuel turbine, carbon could be cycled, avoiding CO2 sourcing for methanol production. #methanol #storage

12
13
14
15
16
17
 
 

cross-posted from: https://lemmy.ca/post/31642688

for capacity: https://insideevs.com/news/738124/toyota-portable-hydrogen-cartridge-fcev/#:~:text=Gallery%3A%20Toyota%20Portable%20Hydrogen%20Cartridges&text=Toyota%20didn't%20say%20how,of%20161%20grams%20of%20hydrogen.

161grams = 5kwh+ of heat energy or close to 3kwh of electric only energy in a fuel cell.

For drones, ebikes, powerstations, this would be higher electric weight density than batteries. And solves ebike/powerstation charging on the go problem.

18
19
20
 
 

cross-posted from: https://lemmy.world/post/18949466

Climate activists disrupted a DNC-adjacent event sponsored by ExxonMobil on Wednesday, the same day that Minnesota Governor Tim Walz formally accepted his nomination as vice-presidential candidate for the Democratic Party. Walz has faced harsh criticism from Indigenous and environmental rights groups in Minnesota for his authorization of the Line 3 oil pipeline through Native treaty lands in the state. We host a roundtable discussion on the climate crisis and the Democratic Party’s response with Ojibwe lawyer and founder of the Giniw Collective Tara Houska; climate organizer Collin Rees, who was part of the ExxonMobil action at the DNC; and climate scientist Michael Mann.

21
22
23
24
19
Doomerism (lemmy.world)
submitted 1 year ago by neanderthal@lemmy.world to c/climate
 
 

I would like to address the doomers.

Just stop. All you are accomplished is dissuading people from trying. Even if we fail, some of us would rather go out feeling good about ourselves knowing that we actually tried. If we succeed, I want to be on the right side of history. If you want to drive a canyonero through a drive through to buy a double cheeseburger on your way to the airport to fly somewhere for a shopping trip: please keep it to yourself.

  • There is still hope
  • Most people want action. I can cite more than one source.
  • Things are starting to turn around. Not as fast as we need to, but we are seeing change
  • Some of us are parents and have a reason to fight with all we have
  • If things get bad, our kids will actually want to have a relationship with us if we cared enough to try
  • Many things that help are economically better on the micro and macro scales

Doomers are the fossil fuel industry's best friend-- even more than the deniers are. If enough people succumb to it, they don't even have to pay lip service to the problem. Doomerism means you can continue to pollute and not even try.

25
 
 

"... research has now found that the vast majority of data stored in the cloud is “dark data”, meaning it is used once then never visited again. That means that all the memes and jokes and films that we love to share with friends and family – from “All your base are belong to us”, through Ryan Gosling saying “Hey Girl”, to Tim Walz with a piglet – are out there somewhere, sitting in a datacentre, using up energy..."

view more: next ›