this post was submitted on 31 Oct 2025
79 points (100.0% liked)

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

7528 readers
369 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
silence7@slrpnk.net
79
Portland won’t weaken its policy to phase out petroleum diesel and replace it with biofuels (www.oregonlive.com)
submitted 1 day ago by silence7@slrpnk.net to c/climate@slrpnk.net
9 comments fedilink hide all child comments
you are viewing a single comment's thread
view the rest of the comments
[–] ArbitraryValue@sh.itjust.works 6 points 1 day ago* (last edited 1 day ago) (1 children)

As far as I know, mandatory use of biofuels is primarily a subsidy for farmers rather than a means of reducing emissions. I'm surprised to see an urban area focus on it.

In his decision, Engstrom said the feedstock restrictions are “core to the original policy intent” and must be preserved because they ensure the policy delivers on promised carbon reductions. Feedstocks made from virgin agricultural products and food crops – such as soybean, canola and palm oils – have been linked to much higher carbon emissions, displacing food production and causing deforestation and are not allowed under Portland’s policy.

It sounds like Portland is making an effort to avoid the farm-subsidy sort of biofuels, but then what is it actually demanding that biofuels be made from?

[–] Horsecook@sh.itjust.works 4 points 1 day ago

I think it’s a mistake to assume that this is an honest effort. That there’s any expectation of compliant biodiesel being made and sold. Realistically, what’s going to happen is that the Jubitz and Pacific Pride locations in Portland are going to be run out of business. That’s very likely the actual goal of the policy, which is equivalent to an enormous fuel tax increase, with some greenwashing as cover.