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Combined display of all available logs of the change wiki. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).

03:48, 31 March 2023 Elie talk contribs created page Stuff huts (Created page with "A "stuff hut" (for lack of better words) is a public place where you can put stuff you don't need{{x|i.e. if you're decluttering your home or moving}}, for anyone to take for free. * Like a //littlefreelibrary.org little free library, but bigger (about the size of a bus stop) and for ''more'' than just books. * Unlike a thrift shop, it can hold things that aren't ''sellable'' but still ''usable''. * Better than putting things at the curb, where things can get rai...")
03:11, 31 March 2023 Elie talk contribs moved page Movers waste to Home waste
03:09, 31 March 2023 Elie talk contribs created page Movers waste (Created page with "People leave a lot of perfectly good stuff at the curb sometimes, when moving or decluttering their homes. Examples * Furniture * Clothes * Spices & tea * Appliances Reasons * Not having time * Not having space * Social norm: When you move out of an apartment or sell your house, it's considered bad etiquette to leave anything in there.<!--This is quite frankly ridiculous, because somebody could use that stuff, and thrift shops are already overloaded typically....")
13:19, 30 March 2023 Elie talk contribs created page the change wiki:Citations (Created page with "This is a page about citing sources. This wiki doesn't conform perfectly to academic standards, but we do our best. ==Types== Not all citations are gathered in the same place. There are several types: * popups * footnotes * datapoints used in the Calculator ==Deficits== On this wiki, a lot of citations might be nonstandard, improper, or even lacking completely. There are a few reasons for this: User:Elie: * I'm currently trying to build content as quickly as p...")
03:05, 30 March 2023 Elie talk contribs created page the change wiki:Page naming (Created page with "==Pseudo-namespaces== * "Code:" pages contain computer code (such as C or SQL) used in generating other content. Input & output files may go in the "File:" namespace. * "Draft:" is for drafts. For more drafts of the same page, add a subpage like "/v2" or "/v3" etc. If possible, add a link at the top of the older draft ("This draft is superseded by [page]."). ==Undecided== I haven't fully decided on a proper standard for how pages should be named. For now, the indecision...")
02:07, 30 March 2023 Elie talk contribs created page Solar power (Redirected page to Solar) Tag: New redirect
01:49, 30 March 2023 Elie talk contribs created page Wind power (Redirected page to Wind) Tag: New redirect
00:05, 30 March 2023 Elie talk contribs created page Energy/faq (Created page with "thumb|Inequality of environmental footprint '''Myth:''' "Your carbon footprint doesn't matter, because the billionaires are responsible for most of global emissions anyway." '''Fact:''' * The richest '''10% of the world''' is responsible for half of global emissions. ** If you're middle-class in a developed country, '''you are ''part of''''' this 10%. * Corporate emissions are a function of what people buy. * Wealth inequality is more ex...")
00:03, 30 March 2023 Elie talk contribs created page File:carbon-inequality1.png (Global inequality of carbon emissions Source: Oxfam Read more: [https://theconversation.com/emissions-inequality-there-is-a-gulf-between-global-rich-and-poor-113804 Emissions inequality: there is a gulf between global rich and poor - Published: March 28, 2019 11.59am EDT - TheConversation])
00:03, 30 March 2023 Elie talk contribs uploaded File:carbon-inequality1.png (Global inequality of carbon emissions Source: Oxfam Read more: [https://theconversation.com/emissions-inequality-there-is-a-gulf-between-global-rich-and-poor-113804 Emissions inequality: there is a gulf between global rich and poor - Published: March 28, 2019 11.59am EDT - TheConversation])
23:29, 29 March 2023 Elie talk contribs created page Draft:Clean coal (Created page with "* applications: power plants, factories * non-CO2 pollution is reduced significantly {{x|Wikipedia copypasta: <q>The primary focus is on sulfur dioxide (SO2) and nitrogen oxides (NOx), the most important gases which caused acid rain; and particulates which cause visible air pollution, illness and premature deaths. SO2 can be removed by flue-gas desulfurization and NO2 by selective catalytic reduction (SCR). Particulates can be removed with electrostatic precipitators. Al...")
22:20, 29 March 2023 Elie talk contribs created page Wind/geography (Created page with "====Background knowledge==== From source: <cite>Factsheet - Wind energy - Center for sustainable systems - University of Michigan</cite> * <q>Average annual wind speeds of 6.5m/s or greater at 80m [altitude] are generally considered commercially viable.</q> * If wind turbines were everywhere, we'd generate far more raw power than we need: {{x|<q>Global onshore and offshore wind power potential at commercial turbine hub heights could provide 840,000 TWh of electricity ann...")
21:57, 29 March 2023 Elie talk contribs created page File:Modeled-map-of-the-yearly-averaged-world-wind-speed-m-s-at-100-m-above-sea-level.png (World map of wind speeds. Source: <cite>Jacobson, Mark & Delucchi, Mark. (2022). Evaluating the Feasibility of a Large-Scale Wind, Water, and Sun Energy Infrastructure.</cite>)
21:57, 29 March 2023 Elie talk contribs uploaded File:Modeled-map-of-the-yearly-averaged-world-wind-speed-m-s-at-100-m-above-sea-level.png (World map of wind speeds. Source: <cite>Jacobson, Mark & Delucchi, Mark. (2022). Evaluating the Feasibility of a Large-Scale Wind, Water, and Sun Energy Infrastructure.</cite>)
17:15, 29 March 2023 Elie talk contribs created page Nuclear war (Created page with "Nuclear war is an existential threat to humanity, because nation-states don't know how to get along.{{en}}")
17:14, 29 March 2023 Elie talk contribs created page Nuclear weapons (Redirected page to Nuclear war) Tag: New redirect
17:11, 29 March 2023 Elie talk contribs created page Nuclear fission/safety (Created page with "==Learning from past disasters== There have been two major nuclear meltdowns in history: Chernobyl and Fukushima. Are all of today's nuclear reactors better made, to prevent the same things from happening again? {{rn}} ===Breeder reactors=== I'm not sure to what extent the same safety lessons apply when designing breeder reactors (an innovation that would be needed if nuclear power has any hope of really replacing fossil fuels). ===Land lost=== One factor in asse...")
00:07, 29 March 2023 Elie talk contribs created page Carbon capture and storage (Created page with "Carbon capture and storage (CCS, or sometimes CCUS{{x|carbon capture, utilization and storage}}) is an industrial process where CO2 emissions are captured and stored deep in the Earth. This is a somewhat questionable approach to reducing climate change. ==Capture== ===Direct air capture (DAC)=== Trying to take CO2 out of the air uses almost as much energy as you got when you burned the equivalent amount of fossil fuels in the first plac...")
23:29, 28 March 2023 Elie talk contribs created page Carbon capture (Redirected page to Carbon capture and storage) Tag: New redirect
23:11, 28 March 2023 Elie talk contribs created page Carbon offsetting (Created page with "It's rich people trying to look less guilty about their massive carbon footprint. Carbon offsetting is false utilitarianism, because the amount of carbon in the world that can actually be "offset" is extremely limited. This basically functions like a zero-sum game: Your offsets take away someone else's ability to offset. This manifests itself economically as a bidding war (which is why carbon offsetting is so expensive that only rich people do it). At the end of the da...")
03:41, 28 March 2023 Elie talk contribs created page Wind/hydrogen (Created page with "This page explores a scenario with... * wind power as the world's main energy source, and * hydrogen gas as the world's main energy storage. ==Land== Wind turbines would be installed on crop land. This would generate enough power. {{qn}}  ==Rare metals== Platinum-group metals (PGMs) are needed for * electrolysis: making hydrogen from electricity {{qn}} * fuel cells: making electricity...")
03:29, 28 March 2023 Elie talk contribs created page Hydrogen (Redirected page to Hydrogen gas) Tag: New redirect
03:15, 28 March 2023 Elie talk contribs created page Wind (Created page with "thumb|A wind turbine Wind power is a possible option for renewable energy. Wind turbines convert wind to electricity. A lot of people incorrectly call wind turbines "windmills". But in fact windmills are a much older technology, which use the wind to mill grains ''mechanically'' (no electricity involved). ==Intermittency== Wind power is even more intermittent than solar. There can be weeks where the wind blows strong{...")
02:11, 28 March 2023 Elie talk contribs created page the change wiki:Writing style (Created page with "This is ''not'' Wikipedia. * Not everything has to be formal. {{x|We highly value logical problem-solving and academic thought. But we try to avoid pedantic intros, as they tend to derail conversations and lose the audience. Also, don't be afraid to break grammar rules, if it gets the point across more clearly.}} * Original research is welcome here. * Things should be straight-to-the-point, and easy to skim through. {{x|We welcome as much detail & nuance as Wikipedia, bu...")
00:22, 28 March 2023 Elie talk contribs created page Lithium-ion (Redirected page to Lithium-ion batteries) Tag: New redirect
00:08, 28 March 2023 Elie talk contribs created page Energy storage/challenge 1 (Redirected page to The great battery challenge) Tag: New redirect
23:34, 27 March 2023 Elie talk contribs created page EROI of energy storage (Redirected page to Energy storage/EROI) Tag: New redirect
23:27, 27 March 2023 Elie talk contribs created page Energy storage/EROI (Created page with "==Overview== EROI = Energy Return On Investment. It's a concept often used for assessing the viability of energy sources such as solar, nuclear, etc. But I believe it also needs to be applied to energy storage. EROI = energy_returned / energy_invested <code>energy_invested</code> should include a few things: * the energy it takes to manufacture or construct the energy storage{{x|preferably including the energy needed to mine the mater...")
20:12, 27 March 2023 Elie talk contribs created page Draft:Climate change (Created page with "==Impact on weather== Even though climate change may only increase the ''average'' temperatures by 1 or 2 degrees Celsius, the ''fluctuation'' of temperatures is increased far more: More days of extreme heat and extreme cold{{x|and of course there will always be deniers saying "what ever happened to global warming, it's so cold!"}}, more tornadoes and hurricanes.")
23:44, 24 March 2023 Elie talk contribs created page The great battery challenge (Created page with "So we need a lot of batteries for energy storage. It has to be done in a way that... * doesn't require too many rare minerals * doesn't require too much energy to produce and later recycle{{x|This implies an additional requirement: Recyclability}} * doesn't require too much labor These doesn't need to be a "one size fits all" solution. Clearly different battery tech is good for different applications. But as a simple viability test, we nee...")
23:39, 24 March 2023 Elie talk contribs created page Draft:Lithium vs oil (Created page with "Some people see the [transition to renewable energy] as "Big Lithium is replacing Big Oil". This brings up a valid question: What ''would be'' lithium's environmental impact, compared to the oil we're trying to phase out? Thought experiment: Status quo -vs- perfectly renewable energy powering lithium-battery-based electric vehicles: * oil: impact of mining{{qn}} + climate change{{qn}} * lithium: impact of mining{{qn}}")
22:06, 24 March 2023 Elie talk contribs created page Lithium-ion/challenge 1/quick research (Created page with "[https://www.youtube.com/watch?v=DFL8iQ3p3cI How Removing Cobalt From Batteries Can Make EVs Cheaper - YouTube] * 1:40 - cobalt helps prevent battery fires * 5:35 - lithium iron phosphate (LFP) batteries are already an alternative, they just don't have as good an energy density{{qn}} -- maybe that's ok tho?")
21:59, 24 March 2023 Elie talk contribs created page Short-range electric vehicles (Created page with "So far, the best EVs seem to come at a high environmental cost - especially rare minerals{{x|such as cobalt}} in the batteries. They also are quite expensive. What if people were willing to drive cheaper EVs with less battery capacity{{x|either due to using batteries with less rare metal content, and/or just ''smaller'' batteries}} and thus less range? Clearly this doesn't cover '''all''' use-cases. Road trips would still need longer-range vehicle...")
18:18, 24 March 2023 Elie talk contribs created page Lithium-ion/challenge 1 (Created page with "Challenge: Lithium-ion batteries without so much cobalt. Reason: * Global cobalt reserves ''severely'' limit the scalability of electric vehicles that run on typical lithium-ion tech. * Cobalt mining involves a disproportionately large amount of ''child labor''. Tradeoffs to overcome: * Cobalt is currently needed for battery stability{{en}} and performance{{en}} Maximum viable cobalt level: * ''Calculation will be added here soon.'' Alternatives to avoid: * O...")
17:56, 24 March 2023 Elie talk contribs created page Draft:Cobalt (Created page with "Cobalt is a rare metal (mineral) (element on the periodic table). ==Demand==  Lithium-ion batteries make up most of the world's demand for cobalt. But this demand would be nearly {{p2|250 times higher|<q>It is estimated that 1 in 250 cars on the road is electric</q> - <cite>How many electric cars in the world? - Feb 1, 2023 - 8 Billion Trees - https://8billiontrees.com/carbon-offsets-credits/cars/how-many-electric-cars-in-the-world/</cite...")
15:46, 24 March 2023 Elie talk contribs created page Draft:Wind (Created page with "Just how intermittent is wind power? We know for example solar can usually be smoothed out with a day{{x|multiplied by average power demand = energy stored}}'s worth of energy storage, but what about for wind power - is a day enough? Or is it common to have no wind for weeks/months and then have strong wind later? If so, is wind really that useful in a non-fossil-fuel world? {{x|Biomass waste is perhaps the only renewable energy source that could ondemand fill in...")
15:20, 23 March 2023 Elie talk contribs created page Summary:How Finland Ended Homelessness (Created page with "This is a summary of [https://www.youtube.com/watch?v=kbEavDqA8iE this YouTube video] Housing first {{en}} * helps people more effectively * costs less overall")
14:56, 23 March 2023 Elie talk contribs created page Draft:Packaging (Created page with "Packaging is needed for food and non-food products alike. Even in a world without marketing, packaging is still needed to protect products from damage. In this way, there is a tradeoff between packaging waste and food waste{{x|as well as waste of consumer goods due to damages}}. TODO: status quo stats: * how much packaging is thrown out every day * how much of all packaging is plastic * list all the negative environmental effects of disposible plastic ** is there an...")
18:43, 22 March 2023 Elie talk contribs created page Estimating environmental impacts based on costs (Created page with "When something is ''expensive'', there's a good chance it takes a lot of energy, materials, or labor to make. This is especially important when considering potential green solutions. It's tempting to assume that money/capitalism is the only thing holding an idea back, but we should try to test that empirically if we can, by looking at material conditions. Unfortunately, good data is hard to come by. When in doubt, we can at least do a rough estimate of an i...")
17:42, 22 March 2023 Elie talk contribs created page Electrify everything (Created page with ""Electrify everything" is a simple way to describe the phasing-out of fossil fuels. Anything powered by coal/oil/gas would instead be powered by electricity. ====How much more electricity would be needed?==== * For transport: See electric_vehicles/energy for a quick estimate. * For industrial: The exact numbers will be posted to this page soon. ====Can we even generate that much electricity?==== Not without major technological breakthroughs in solar & win...")
17:30, 22 March 2023 Elie talk contribs created page Sulfur hexafluoride (Created page with "Sulfur hexafluoride (SF6) is an extremely potent greenhouse gas. Its main use is in the switching stations of power grids. Other minor uses include the gas inside tennis balls. ==Research needed== * How much more SF6 would be involved if electrify everything is the main way to replace fossil fuels? * Are there practical solutions to avoid almost all SF6 emissions? If so, what are they?")
17:29, 22 March 2023 Elie talk contribs created page Greenhouse gases (Created page with "File:ghg-usa-2020.png  Total U.S. Emissions in 2020 = 5,981 Million Metric Tons of CO2 equivalent (excludes land sector). Percentages may not add up to 100% due to independent rounding. The pie chart percentages are of total warming effect (CO2 equivalent), not the mass of the gases. ==Gases by potency== Some gases are far more potent than others, by mass. Luckily, the more pot...")
17:12, 22 March 2023 Elie talk contribs created page File:ghg-usa-2020.png (Greenhouse gas emissions by type - pie chart of CO2eq - USA Source: [https://www.epa.gov/ghgemissions/overview-greenhouse-gases Overview of Greenhouse Gases - US EPA])
17:12, 22 March 2023 Elie talk contribs uploaded File:ghg-usa-2020.png (Greenhouse gas emissions by type - pie chart of CO2eq - USA Source: [https://www.epa.gov/ghgemissions/overview-greenhouse-gases Overview of Greenhouse Gases - US EPA])
20:41, 21 March 2023 Elie talk contribs created page Summary:Aluminum Producers Emit Some of the World's Most Damaging Greenhouse Gases (Created page with "This is a summary of [https://insideclimatenews.org/news/23122022/china-aluminum-immortals/ an article] from Inside Climate News, originally titled "Why Chinese Aluminum Producers Emit So Much of Some of the World’s Most Damaging Greenhouse Gases". ==Problem== PFCs{{x|perfluorocarbons - especially the gases CF4 and C2F6}} are greenhouse gases that are less common than CO2, but far more potent and long-lasting. Some alu...")
20:39, 21 March 2023 Elie talk contribs created page File:aluminum-pfc-emissions.png (PFC emissions of various aluminum production facilities. Units: Tons CO2eq per ton of aluminum produced. Source: : Article: [https://insideclimatenews.org/news/23122022/china-aluminum-immortals/ Why Chinese Aluminum Producers Emit So Much of Some of the World’s Most Damaging Greenhouse Gases - Inside Climate News] : Authors: Phil McKenna, and Lili Pike, Grid China Reporter : Date: December 23, 2022)
20:39, 21 March 2023 Elie talk contribs uploaded File:aluminum-pfc-emissions.png (PFC emissions of various aluminum production facilities. Units: Tons CO2eq per ton of aluminum produced. Source: : Article: [https://insideclimatenews.org/news/23122022/china-aluminum-immortals/ Why Chinese Aluminum Producers Emit So Much of Some of the World’s Most Damaging Greenhouse Gases - Inside Climate News] : Authors: Phil McKenna, and Lili Pike, Grid China Reporter : Date: December 23, 2022)
11:59, 19 March 2023 Elie talk contribs created page Draft:Why scalability matters (Created page with "Not because "one size fits all"! There are hundreds of ways to produce food. But for each, it's worth doing a thought experiment: "If this was scaled up to 8 billion people, would Earth even have enough resources{{x|and can it be done '''without''' major ecological destruction worse than the status quo?}}". We promote ideas where the answer is "yes". That way, any '''mix of solutions''' will be ecologically sound. We want a diversity of solutions for the world, no...")
11:47, 19 March 2023 Elie talk contribs created page Draft:Why calories matter (Created page with "If you live in a {{ap|first-world|is that politically incorrect?|developed|does a wide enough audience understand what that means?|rich|too vague on its own}} country, it might seem strange & wrong to see ideas centered around optimizing calorie{{x|or in some cases, protein}} production. After all, humans need a lot more than calories & protein! There are over 30 essential vitamins & minerals that everyone needs. And maybe you live in a society where people...")
18:05, 18 March 2023 Elie talk contribs created page Talk:Biomass waste (Created page with "==Disambiguation== This page is focused on crop residues. There are other forms of biomass waste as well, right? So should this page be renamed to crop residues, and then the biomass waste page would contain a link to it? ~~~~")