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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).

00:30, 1 July 2023 Elie talk contribs created page Carnot's theorem (Created page with "{{minor|(see Wikipedia page for more detail)}} General formula: efficiency_max = (t_hot - t_cold) / t_hot This describes how much usable work (physics energy) you can obtain from a ''difference of temperatures'' <code>t_hot</code> and <code>t_cold</code>. The temperatures must be measured in <code>kelvin</code> (or any other units that are relative to absolute zero). <code>efficiency_max</code> is a theoretical maximum energy efficiency, not quite obtainable in re...")
18:44, 30 June 2023 Elie talk contribs created page Renewables (Created page with "===General outline for climate change solutions=== '''Energy production & storage''' * Cover every rooftop with solar panels that aren't mineral intensive. ** Grid energy storage should be mostly iron redox flow batteries and sodium-ion batteries. * Put wind turbines on crop land, especially land close to people or industries. ** Use them to produce hydrogen gas as the main energy storage....")
18:41, 30 June 2023 Elie talk contribs created page Solar thermal (Created page with "'''Solar thermal panels''' convert sunlight directly into heat, without converting it to electricity first. ==Considerations== {{empty}}")
18:39, 30 June 2023 Elie talk contribs created page Short-range EVs (Redirected page to Short-range electric vehicles) Tag: New redirect
17:54, 30 June 2023 Elie talk contribs created page Perovskite solar panels (Created page with "These are a type of photovoltaics. See the [https://en.wikipedia.org/wiki/Perovskite_solar_cell Wikipedia article] for technical details. {{considerations}} ==Lead toxicity== {{sum|Likely problem|bad}} The best-performing perovskites are lead-based. This probably wouldn't be an issue for small-scale applications managed properly, but could maybe pose a major environmental hazard if every rooftop were covered in these panels (which is roughly what...")
18:05, 20 June 2023 Elie talk contribs created page Housing/USA (Created page with "==External links== * [https://www.youtube.com/watch?v=344ULCbhAsE Why the US doesn't have enough affordable housing #shorts - VOX - YouTube]")
19:36, 10 June 2023 Elie talk contribs created page Air source heat pump (Redirected page to Heat pumps) Tag: New redirect
22:15, 3 June 2023 Elie talk contribs created page File:u value windows table.png (U-values needed for windows in a passivhaus design. <cite>Source: [https://blog.passivehouse-international.org/ug-uf-uw-uwhat-an-intro-to-the-u-value-and-those-most-important-to-passive-house-design/ Ug, Uf, Uw, Uwhat? : An intro to the U-value and those most important to Passive House design]</cite> Description: <q>Maximum heat transfer coefficient for vertically installed windows by climate. |Table adapted from [https://passiv.de/downloads/03_certification_criteria_transparen...)
22:15, 3 June 2023 Elie talk contribs uploaded File:u value windows table.png (U-values needed for windows in a passivhaus design. <cite>Source: [https://blog.passivehouse-international.org/ug-uf-uw-uwhat-an-intro-to-the-u-value-and-those-most-important-to-passive-house-design/ Ug, Uf, Uw, Uwhat? : An intro to the U-value and those most important to Passive House design]</cite> Description: <q>Maximum heat transfer coefficient for vertically installed windows by climate. |Table adapted from [https://passiv.de/downloads/03_certification_criteria_transparen...)
02:02, 3 June 2023 Elie talk contribs created page Passive house (Redirected page to Passivhaus) Tag: New redirect
01:47, 3 June 2023 Elie talk contribs created page File:u value walls table.png (U-values needed for walls in a passivhaus design. Source: [https://blog.passivehouse-international.org/ug-uf-uw-uwhat-an-intro-to-the-u-value-and-those-most-important-to-passive-house-design/ Ug, Uf, Uw, Uwhat? : An intro to the U-value and those most ...])
01:47, 3 June 2023 Elie talk contribs uploaded File:u value walls table.png (U-values needed for walls in a passivhaus design. Source: [https://blog.passivehouse-international.org/ug-uf-uw-uwhat-an-intro-to-the-u-value-and-those-most-important-to-passive-house-design/ Ug, Uf, Uw, Uwhat? : An intro to the U-value and those most ...])
00:56, 3 June 2023 Elie talk contribs created page Passivhaus (Created page with "A '''passivhaus''' is any building designed to maintain a comfortable indoor air temperature without any active heating or cooling. To stay warm in the winter, a passivhaus relies on sunlight and good insulation. The colder the winter, the more insulation is needed. ===Construction costs=== {{sum|{{rn}} }} Passivehauses are more complex to build, requiring more labor & energy {{qn}} and possibly rarer materials. The increased environmental footprint of...")
14:22, 2 June 2023 Elie talk contribs created page Evaporative cooling (Created page with "Uses the evaporation of water for cooling the air in homes & buildings. ==Types== {{empty}} ==Considerations== ===Water consumption=== {{sum|{{qn}} }} {{empty}}")
00:29, 2 June 2023 Elie talk contribs created page Subdividing (Created page with "==Motivations== There's often a lack of single-person housing, or housing in general. Subdividing is probably cheaper and more environmentally-friendly than building all new units from scratch. ==Types / examples== * Apartments into studios * Single-detached houses into duplexes ==Considerations== ===Size & space=== {{sum|Sufficient}} A studio or one-bedroom apartment is suited for a single person, especially if affordable and in a walkable area. A half-duplex is...")
23:58, 1 June 2023 Elie talk contribs created page Commercial to residential (Created page with "==Types== * Converting offices to housing")
23:57, 1 June 2023 Elie talk contribs created page Does expensive housing indirectly help the poor (Created page with "Does expensive housing indirectly help the poor? ===No, if the new housing is expensive to ''build''.=== Materials & labor are both in limited supply. Expensive construction puts more strain on natural resources, leaving less for the poor. Oldschool economists may say otherwise, but this is because they downplay ecological limits, and/or exaggerate the rate at which technological progress can improve {{alt|energy|labor|materials}} efficiency of construction. ===No, if...")
22:12, 1 June 2023 Elie talk contribs created page Single-person housing (Created page with "In some regions, single people vastly outnumber single-person housing units. For example in Canada, there are over 8 million single adults but only 2 million one-bedroom units and bachelor units combined. As a result, * Young adults often live with their parents. * Couples, after breakup or divorce, still end up sharing the same home. * People may get stuck in abusive relationships with nowhere to move to. * People have to look for roommates onlin...")
20:53, 1 June 2023 Elie talk contribs created page Converting offices to housing (Created page with "Ever since the pandemic, office buildings have become less popular (sometimes to the extent of being almost abandoned). So it might be worth converting some of that space into housing. '''Hybrid approach''' If only ''part'' of an office building is converted into housing, the considerations become easier: * Less load on plumbing & wiring. * Housing units could get the window space; office units could be in the building core. * The building becomes ''mixed-use'', wh...")
02:27, 25 May 2023 Elie talk contribs created page Term:isochromic (Created page with "On this wiki, we like making world maps. In general, we want the maps to be '''isochromic''' - meaning "equal coloring represents equal stuff". {{minor|For example, if we're mapping population, every million people should be represented with the same total amount of "ink" or "coloring" on the page.}} A lot of maps on the internet fail at this in various ways. {{en}} {{minor|That's why I made a small program in C for making isochr...")
00:56, 25 May 2023 Elie talk contribs created page File:amazon-deforestation-drivers-2001-13-960.jpg (Source: https://rainforests.mongabay.com/amazon/amazon_destruction.html)
00:56, 25 May 2023 Elie talk contribs uploaded File:amazon-deforestation-drivers-2001-13-960.jpg (Source: https://rainforests.mongabay.com/amazon/amazon_destruction.html)
21:06, 23 May 2023 Elie talk contribs created page Passenger emissions metrics (Created page with "Is it better to travel by car, bus, plane or train? A common approach would be to look at the average "carbon emissions per passenger kilometer" for each mode of transportation. But if we want a fair comparison, we have to make sure they are all calculated the same way: Two ways to calculate: * A. Assume the vehicle is packed with some arbitrary number of people. Divide the vehicle's fuel economy by that number. * B. Look at the total yearly emissions of the {{alt|bus c...")
15:13, 23 May 2023 Elie talk contribs created page Semi trucks (Created page with "Semi trucks, also known as freight trucks, transport goods that people consume. Unlike cars, semi trucks are harder to electrify, because: * more energy needs to be stored, for longer-range trips * more peak power is needed The few existing solutions on the market today rely on lithium-ion batteries which contain way too much cobalt to scale up. ==Candidates== ''This page needs more research before it can reach a decent conclusion.'' {{minor|Note: We probably do...")
13:14, 23 May 2023 Elie talk contribs created page Albedo (Created page with "==Research needed for this page== Say hypothetically you destroy some forest and then pave the area with some highly reflective material. Would this make the climate warmer or cooler? How would the warming from the carbon released be weighed against the cooling from the increased albedo? Physics should be able to answer this with reasonable certainty. We just need to gather the right datapoints and do the math. {{en}} Note: * Even if it turns...")
20:14, 21 May 2023 Elie talk contribs created page Draft:Overview (Created page with "Overview of stuff I've been wanting to say for years now: <pre class="levels"> climate change is about energy most savings come from buying less systemic changes electronics fighting against planned obsolescence fighting against code bloat promoting right to repair personal frugalism clothes replace less often dont wear em down in the first place pick some bad clothes dedicated for exercise sitting ele...")
10:45, 21 May 2023 Elie talk contribs created page Geoengineering (Created page with "Geoengineering is a proposed "solution" to climate change, involving adding particulate patter to the atmosphere to reflect away some amount of sunlight into space. This would likely do more harm than good. {{considerations}} ==Habitat loss== {{sum|Major problem|bad}} Less sun → lower crop yields → more land needed to produce the same amount of food → more deforestation and destruction of ecosystems in general. {{lig...")
23:18, 20 May 2023 Elie talk contribs created page Nuclear fusion (Created page with "Possible energy source - not Term:viable yet. {{considerations}} ==Energy inputs== {{sum|Major problem}} Takes more energy than it produces. EROI is still below 1. {{en}} ==Scarcity of fuels== {{sum|Problem in some cases}} There are no viable reactors yet, but of the prototypes so far, some rely on tritium, an extremely rare form of hydrogen. Supply would be an issue. Other possible fuels include deuterium, lithium or boron, which are comparatively les...")
23:14, 20 May 2023 Elie talk contribs created page Nuclear fission (Created page with "==Types== * Conventional nuclear power - used by all reactors today * Breeder reactors - not operational yet ==Basic physics== {{empty}}")
22:37, 20 May 2023 Elie talk contribs created page Frugalism (Created page with "'''We can still have nice things, we just don't need to ''replace'' them so often.''' In developed countries, the average person could stand to reduce the amount of things they buy and throw out. {{minor|This is what's meant by "reduce" in "reduce, reuse, recycle" - and it often gets overlooked.}} ==Extent== More than half of all manufacturing could be avoided if: * People voluntarily bought fewer things * People used each others' second-hand goods more often * Plann...")
22:08, 20 May 2023 Elie talk contribs created page Solar panels (Redirected page to Photovoltaics) Tag: New redirect
19:42, 20 May 2023 Elie talk contribs created page Electric car (Redirected page to Electric vehicles) Tag: New redirect
18:57, 20 May 2023 Elie talk contribs moved page Energy/units to Energy units (Subpage architecture is unnecessary)
18:24, 20 May 2023 Elie talk contribs created page the change wiki:Related (Created page with "This is a list of other people's projects that are related to (but not affiliated with) this wiki. ====Wikis==== * [//rationalwiki.org RationalWiki] - Great at debunking misinformation, just not quite as focused on solutions. * [//wikipedia.org Wikipedia] - Full of information, but not a platform for coming up with new ideas. * [//repair.wiki Repair Wiki] - Devoted exclusively to repairing electronics & consumer goods. ====Other==== * [//lesswrong.o...")
17:06, 20 May 2023 Elie talk contribs uploaded a new version of File:energy-usage-by-source.png (moved the title words, so people don't get confused and only look at the top bar)
16:56, 20 May 2023 Elie talk contribs created page Term:GWP (Created page with "GWP stands for "global warming potential", and it's used to describe the relative strengths of different greenhouse gases. Each greenhouse gas has a GWP value. It could be understood as the answer to the question: "Emitting 1 ton of [this greenhouse gas] is equivalent to emitting how many tons of CO2?" See the page on greenhouse gases for tables. Also note that the use of GWP implies a standard ''timescale'', because some gases stay longer in the a...")
16:45, 20 May 2023 Elie talk contribs created page Term:CO2eq (Created page with "CO2eq stands for "CO2 equivalent". It's a way to measure the relative strengths of different greenhouse gases. In other words: "Emitting 1 ton of [whichever greenhouse gas] is equivalent to emitting how many tons of CO2?" See main page on greenhouse gases for tables with the CO2eq values for each gas. Also note that the use of CO2eq implies a standard ''timescale'', because some gases stay longer in the at...")
16:31, 20 May 2023 Elie talk contribs created page Greenhouse gas (Redirected page to Greenhouse gases) Tag: New redirect
16:02, 20 May 2023 Elie talk contribs created page Coal (Created page with "Coal is considered to be the worst of all fossil fuels. For the same amount of energy, it emits: * more CO2 * other pollutants in its toxic smoke ** {{minor|some of which could be mitigated, but not the CO2}} Coal is commonly used for: * generating electricity - {{p2|(see stats)|From ''Key World Energy Statistics 2020 (IEA report):'' <...")
16:01, 20 May 2023 Elie talk contribs created page Energy supply (Redirected page to Energy#Energy supply) Tag: New redirect
15:19, 20 May 2023 Elie talk contribs created page Coal pollution mitigation (Created page with "Coal pollution mitigation, often marketed as "clean coal", is a set of processes to reduce ''some'' of the pollution of coal power. '''This does not reduce CO2 emissions.''' {{x|For that, it would need carbon capture, which is not economically viable.}} It reduces ''other'' pollutants: * Gases that cause acid rain ** Sulfur dioxide (SO2) ** Nitrogen oxides (NOx) * Toxic metals ** Mercury {{x|"up to" 95% re...")
14:54, 20 May 2023 Elie talk contribs created page Clean coal (Redirected page to Coal pollution mitigation) Tag: New redirect
17:58, 19 May 2023 Elie talk contribs moved page Nutrition calculator/examples to Wiki for a better world:Nutrition calculator/examples
17:48, 19 May 2023 Elie talk contribs created page Nutrition/examples (Redirected page to Nutrition calculator/examples) Tag: New redirect
17:47, 19 May 2023 Elie talk contribs created page Nutrition calculator/examples (Created page with "This page is to showcase examples of diets, good and bad. ==Healthy - plant-based== ===Simple cooked food=== {{empty}} ===Junk food but balanced=== {{empty}} ===Cliché vegan choices=== {{empty}} ===Raw vegan=== {{empty}} ==Healthy - omnivore== {{empty}} ==Bad diets - nutrient deficient==  {{empty}}")
17:20, 19 May 2023 Elie talk contribs moved page Draft:Plant-based to Plant-based without leaving a redirect (Good enough to publish for now)
17:19, 19 May 2023 Elie talk contribs moved page Plant-based to Old:Plant-based without leaving a redirect (Making way for a better version of the page)
16:41, 19 May 2023 Elie talk contribs created page Feed the world (Redirected page to Food) Tag: New redirect
16:40, 19 May 2023 Elie talk contribs created page Food funnel (Redirected page to File:food-funnel.png) Tag: New redirect
15:49, 19 May 2023 Elie talk contribs created page File:nutritionCalculator-naturalVegan1.png (Screen capture of nutrition calculator ([https://olam.wiki/nutrition.html?targets=averaged&timescale=1&name0=Kale%2C%20raw&amount0=100&color0=rgb(0%2C%20153%2C%200)&name1=Sweet%20potato%2C%20cooked%2C%20baked%20in%20skin%2C%20flesh%2C%20without%20salt&amount1=200&color1=rgb(255%2C%20153%2C%200)&name2=Seeds%2C%20sunflower%20seed%20butter%2C%20with%20salt%20added%20(Includes%20foods%20for%20USDA's%20Food%20Distribution%20Program)&amount2=100&color2=rgb(204%2C%20204%2C%20204)&name3=Peppers%2C%20...)