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[-] spidermanchild@sh.itjust.works 1 points 1 day ago

What are you actually advocating for here? Not electrifying and waiting another few decades for hydrogen? You come off as excessively defensive of the practically nonexistent H2 industry and excessively critical of electrification, which is basically the Shell and Exxon position. We don't have time wait for anything, we need to use the tech we have now to reduce warming. Where do we get the hydrogen in your world? Is it blue or green? Blue is just fossil fuels with extra steps and green doesn't make sense until we have significant excess renewables and already electrified the easy stuff (buildings) and then it might still make sense only for industry/shipping and niche stuff. H2 itself has a GWP of 11 or so, and we will leak quite a bit. So again, what are you actually arguing for? I can't buy hydrogen, period. I can't buy a hydrogen vehicle, or a hydrogen furnace, or a hydrogen anything. What do you actually think we plebs should be doing here? I already want green steel as much as you do.

[-] Hypx@piefed.social 1 points 1 day ago

The first point to make is that hydrogen is not decades off. Green hydrogen is happening now, and its production is rapidly expanding alongside the expansion of renewable energy production. Many sectors can rapidly adopt green hydrogen right away. This is similar to the conversation we we had about solar power about a decade ago. Critics of solar power back then were being Luddites (and sometimes secret fossil fuel industry stooges). They were convinced that solar could not be cost-effective or scale, based off of very outdated understandings of the issue, but they were wrong. This conversation is repeating with green hydrogen.

On a related note, pro-electrification crusaders are being hypocrites on this subject. They themselves are demanding that we wait decades for miracle batteries or multi-decadal long electrification programs. Because they want "perfect" solutions rather than "good" solutions. A good example is how they demand we fully electrify all rail, a process that will take decades, rather than doing something faster like switching diesel trains to hydrogen trains. In reality, adopting hydrogen now, alongside more reasonable forms of electrification, will be a faster path for reducing CO2 emissions.

Also note that most "fearmongering" types of argument against hydrogen originated from the fossil fuel industry. They are always spreading propaganda intended to undermine green energy projects, and make similar claims about all green technologies. Claims that hydrogen is dangerous, or a GHG, or will leak, etc., are all fear tactics created with minimal amounts of evidence. In reality, hydrogen has very few problems, and adopting it will drastically make transportation and industry safer and more green. It is unfortunate that many environmentalists have fallen for this tactic, but I suppose every green idea had to overcome it.

Finally, you can buy hydrogen and hydrogen-related products. Sure, we are still a bit early on the adoption curve, but that is true of every new idea. Someone can buy a hydrogen car, or a furnace, or whatever right now. Many more are also capable, but don't know it yet. So rather than demonizing something for not being able to basically time travel, environmentalists should promote green ideas in order to accelerate their adoption.

this post was submitted on 01 Oct 2025
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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.

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