Well, there's also burning regular fuel in a fuel cell, a FCEV. That doubles the efficiencies over ICE, so I guess that bumps it back up to 8x away?
Given the great energy densities and stability in transport of hydrocarbons, there's already some plants out there synthesising them directly from green sources, so that could be a solution if we don't manage to increase battery densities by another order of magnitude.
The problem isn't CO2 it's pulling carbon out of geological deposits. Thus the carbon atoms in synthetic fuel can be considered "green" provided an appropriate energy source was used.
You misunderstand the problem. The act of emitting CO2 into the atmosphere is not a problem.
Significantly increasing the CO2 concentration in the atmosphere is the problem. This happens when geological sources are used.
Unfortunately, burying dead trees in a landfill doesn't solve the problem because they decompose to methane which escapes. But you're right that geological CO2 production could be balanced by geologic CO2 sequestration, done properly.
The point is that emitting CO2 into the atmosphere was never the problem. Adding geological carbon back into the carbon cycle is the root cause of the entire thing.
You can certainly bury dead trees. I'm not sure how deep you'd need to go to accomplish long term (ie geological timeframe) capture. I somehow doubt the economics work out since what is all the carbon capture research even about given that we could just be dumping bamboo chips into landfills?
Correct, but burying trees today isn't going to turn them into coal.
The big difference is that when the current coal layers were formed, bacteria to decompose trees hadn't evolved yet. There was a huge gap between trees forming and the ecosystem to break down trees forming, which led to a lot of trees dying and nothing being able to clean it up, which meant it was just left lying there until it was buried by soil and eventually turned into coal.
Try to bury a tree today, and nature will rapidly break it down. It won't form coal because there's nothing left to form coal.
But if the CO2 recently came from the atmosphere it's still a net zero impact though.
Like, take 5 units of carbon out of the atmosphere to create the fuel. Burn it and release 5 units of carbon to the atmosphere. What's the net increase again? (-5) + 5 = ?
FWIW I'm not saying these processes actually achieve this in reality. Just pointing out that it could be carbon neutral in the end.
And, the two major byproducts of burning hydrocarbons are water and carbon dioxide.
Literally essential plant nutrients, essential for life.
Tangentially related, the 2022 Hunga Tonga–Hunga Haʻapai volcanic eruption ejected so much water vapour in to the upper atmosphere, it was estimated to have ongoing climate forcing effects for up to 10 years.
Water vapour is a stronger greenhouse gas than carbon dioxide.
And we heard precisely nothing about that in the media other than some science specific sources at the time and nothing on an ongoing basis.
From Wikipedia:
The underwater explosion also sent 146 million tons of water from the South Pacific Ocean into the stratosphere. The amount of water vapor ejected was 10 percent of the stratosphere's typical stock. It was enough to temporarily warm the surface of Earth. It is estimated that an excess of water vapour should remain for 5–10 years.
Please, the media didn't report on this because natural disasters affecting the climate is not controllable by humans and thus doesn't warrant a global effort to address unless it's so large as to be species ending.
Global warming is not fake, there's tons and tons of evidence it is real and the weather is getting more and more extreme as humans continue to burn petrol.
Also some time after that other guy copied and pasted his canned Hunga remark into his big spreadsheet of climate denial comments the international community of climate scientists concluded that Hunga cooled the atmosphere, on balance.
"As a consequence of the negative TOA RF, the Hunga eruption is estimated to have decreased global surface air temperature by about 0.05 K during 2022-2023; due to larger interannual variability, this temperature change cannot be observed."
We should be moving towards being able to terraform Earth not because of anthropogenic climate forcing, but because one volcano or one space rock could render our atmosphere overnight rather uncomfortable.
You won’t find the Swedish Doom Goblin saying anything about that.
> burn petrol.
Well yeah, so making electricity unreliable and expensive, and the end-user’s problem (residential roof-top solar) is somehow supposed help?
Let’s ship all our raw minerals and move all our manufacturing overseas to counties that care less about environmental impacts and have dirtier electricity, then ship the final products back, all using the dirties bunker fuel there is.
How is that supposed to help?
I mean, I used to work for The Wilderness Society in South Australia, now I live in Tasmania and am a card carrying One Nation member.
Because I’m not a complete fucking idiot.
Wait till you learn about the nepotism going on with the proposed Bell Bay Windfarm and Cimitiere Plains Solar projects.
I’m all for sensible energy project development, but there’s only so much corruption I’m willing to sit back and watch.
With the amount of gas, coal, and uraniam Australia has, it should be a manufacturing powerhouse, and host a huge itinerant worker population with pathways to residency / citizenship, drawn from the handful of countries that built this country. And citizens could receive a monthly stipend as their share of the enormous wealth the country should be generating.
Japan resells our LNG at a profit. Our government is an embarrassment.
Context is for kings though. In the context of what occurred when it occurred, you’re right.
For a while there, Australia was known as ‘the lucky country’ because despite the folly of politicians, and general fallibility of humans, we had wealth for toil.
As well as contrast issues, could also be that there was a javascript error on their end (or they don't whitelist sites for JS by default). This is unfortunately one of those sites that renders a completely blank page unless you use reader mode, enable JS, or disable CSS.
If you're talking about url/search bar at the bottom on mobile, that's customisable - actually they ask you which you prefer when you install it, but you can change it at any time in settings.
(personally I prefer all that stuff at the bottom since it's more conveniently where all my other phone nav is, and visibility fits in well with how I scroll)
Alright, now I'm doubly confused, since the search bar is typically on the address bar which is at the top of the screen. You might want to test a clean profile. Perhaps some customisation along the way changed things on your setup.
UTF-8 always has the same byte order,[5] so its only use in UTF-8 is to signal at the start that the text stream is encoded in UTF-8...
Not using a BOM allows text to be backwards-compatible with software designed for extended ASCII. For instance many programming languages permit non-ASCII bytes in string literals but not at the start of the file. ...
A BOM is unnecessary for detecting UTF-8 encoding. UTF-8 is a sparse encoding: a large fraction of possible byte combinations do not result in valid UTF-8 text.
That last one is a weaker point but it is true that with CSV a BOM is more likely to do harm, than good.
And for those who object that a long piece of tissue paper wasn't the intent of the original claim, Mythbusters got 11 folds out of an aircraft hanger sized square piece of regular paper.
Git's plumbing also kinda sucks (in places). Some of the current limitations of jj in what syncing state between repos is due to things missing from git that they are having a hard working around, at least based on what I've seen browsing their tickets. That inability to push the really useful jj state upstream for pulling from any machine seems like a major pain point in jj right now (was one of the major issues referenced in a jujutsu intro guide last year linked on HN)
The same issue hit the initial efforts (that I think were the inspiration for jj) when the mercurial folks, recognising git had kinda taken over the market, experimented in making a mercurial frontend backed by the git db. Limitations like the diff format (mercurial's weave one is one the jj folks also want to add at some point) and the lack of a method for tracking phases (mercurial relies on this for clean history without throwing out commits), and lack of file move/copy tracking.
He said his first order of decocanised cocoa leaf was seized at the border. I can see that discouraging trying again, esp when he's trying to make something others could reproduce.
He did find a pretty good substitute for the primary cocoa leaf ingredient though. Also, what he made was virtually indistinguishable in the taste tests. One person said that his tasted closer to the 2L of coke than the can of coke did, which suggests the final bit could just be carbonation level of the soda stream.
That was our theory in the office when we taste tested the various cokes. The favorite by far was kosher for Passover coke. At first we thought it was the sugar vs. HFCS, but bottled Mexican coke didn’t fare as well — blind most people thought Coke Zero (which is my favorite coke) was Mexican Coke.
My theory was that the carbonation was perfect and the product was fresher, as the bottler requires rabbinical supervision and they probably make it for a limited run.
There is essentially zero chemical difference whatsoever in sugar vs corn syrup coke. sucrose disassociates in the presence of an acid into glucose+fructose simple sugars. Just being carbonated will disassociate the sucrose.
> sucrose disassociates in the presence of an acid into glucose+fructose simple sugars
Which tastes different from pure fructose. If you want to taste them side by side, you can absolutely tell the difference. (If you've done any endurance sports, you know what I mean.)
Once digested I agree that the health effects are suspect. But tastewise, fructose, sucrose and glucose are distinct.
I'm confused by your reply. GP's point is that they both dissociate into simple sugars, and thus it doesn't matter what the source is. And your response says correctly that sucrose tastes different than both fructose and glucose, but I don't see how this contradicts him. There is (practically) no sucrose left.
Are you perhaps thinking that "high fructose corn syrup" is predominantly fructose? The name is confusing, but it actually means that it is high in fructose relative to normal corn syrup, not that fructose predominates. HFCS is usually pretty close to 50:50 fructose to glucose, just like sucrose is:
How much fructose is in HFCS?
The most common forms of HFCS contain either 42 percent or 55 percent fructose, as described in the Code of Federal Regulations (21 CFR 184.1866), and these are referred to in the industry as HFCS 42 and HFCS 55. The rest of the HFCS is glucose and water. HFCS 42 is mainly used in processed foods, cereals, baked goods, and some beverages. HFCS 55 is used primarily in soft drinks.
I made no assertion about the taste of sugar vs. corn syrup. There are a number of products marketed as "Coke", and those products have different flavor profiles. Some use sucrose, some HFCS. It might be formulation, it might be packaging, freshness or bottling methodology. Maybe they don't tweak formulas for limited run products or in local markets like Mexico. I have no idea.
Even with the standard fountain formulation, there is a different/better flavor at McDonald's because of the standards they apply to each part of the supply chain. In a few weeks, depending on where you live, there will be two liter bottles of coke with a yellow cap. That's kosher for passover -- try it.
This is why Firefox chose to implement a custom PDF reader in pure JS for better sandboxing leveraging the existing browser JS sandboxing.
As a side effect, it's been a helpful JS library for embedding PDFs on websites.
The Chrome PDF parser, originating from Foxit (now open-sourced as PDFium), has been the source of many exploits in Chrome itself over the years.
And the end of their self hosting offerings (Server, Data Center), which is currently driving a lot of people towards XWiki, for other reasons than money. XWiki SAS being mainly in Europe makes it attractive to EU users too.
> do you have any migration tips?
I don't have specific migration tips. I hope the docs are complete enough!
The Confluence Migration Toolkit is based on the Confluence XML module you found, but it adds a nice and convenient UI, converts some more macros that XWiki SAS sells, there's support, and there's consulting for larger migration projects or projects with special requirements.
(note: despite some paying features, everything is open source)
(disclaimer in case it was not obvious, I work for XWiki SAS)
Amusingly, exactly opposite experience here. That said, our on-prem is jira and confluence integrated with db on same machine, and apache in front doing additional caching. I imagine like so many things it is how you set it up...
If you read my previous comment, I said it was largely the specific poor plugin that caused most of the performance issue with the database queries. I never complained about the overall speed of on-prem Jira. That was the assertion of the person who’s only ever used the cloud version.
Given the great energy densities and stability in transport of hydrocarbons, there's already some plants out there synthesising them directly from green sources, so that could be a solution if we don't manage to increase battery densities by another order of magnitude.
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