this post was submitted on 10 Jul 2025
148 points (99.3% liked)

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

6940 readers
593 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
 

Submerged in about 40 meters (44 yards) of water off Scotland’s coast, a turbine has been spinning for more than six years....

The MeyGen tidal energy project off the coast of Scotland has four turbines producing 1.5 megawatts each, enough electricity collectively to power up to 7,000 homes annually.

you are viewing a single comment's thread
view the rest of the comments
[–] Scott_of_the_Arctic@lemmy.world 14 points 3 days ago (8 children)

Not sure how feasible it is to roll this out large scale. There aren't that many stretches of water as lively as the pentland firth.

[–] Semi_Hemi_Demigod@lemmy.world 18 points 3 days ago (4 children)

This is true, but I think the big thing is that this lasted as long as it did. Material science is important, and if we want Io scale these up for more general use we need to make sure they can at least survive.

Thanks to the power of two, a larger diameter blade could capture a lot more energy, and might be put in places with lesser tidal bores.

[–] ChicoSuave@lemmy.world 10 points 3 days ago (1 children)

100 percent accurate because building benthic structures is incredibly hard. Having one with moving parts is even more crazy.

[–] con_fig@programming.dev 5 points 2 days ago* (last edited 2 days ago)

benthic

New word day for me!

load more comments (2 replies)
load more comments (5 replies)