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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).
- 01:02, 9 August 2022 Elie talk contribs created page Ammonia (Created page with "Ammonia (NH<sub>3</sub>) is a form of nitrogen. The vast majority of ammonia is used for fertilizer. Ammonia production requires energy. Currently this is mainly done with fossil fuels. But suppose we find another (greener) scaleable way to produce it... Then could it also be used as the "fuel of the future"? Because apparently it's easier to work with (storage, transport, etc) than hydrogen gas. Questions unanswered: What about the...")
- 14:13, 7 August 2022 Elie talk contribs moved page File:Primary-Country-and-continent-codes-list-csv csv.csv to File:PRIMARY-Country-and-continent-codes-list-csv csv.csv without leaving a redirect
- 14:12, 7 August 2022 Elie talk contribs moved page File:Primary-Blue Marble 2002.png to File:PRIMARY-Blue Marble 2002.png without leaving a redirect
- 14:02, 7 August 2022 Elie talk contribs created page File:Primary-Country-and-continent-codes-list-csv csv.csv (Table of countries and their Country Codes (ISO3, M49, etc) and the continents they are on. Source: [https://datahub.io/JohnSnowLabs/country-and-continent-codes-list])
- 14:02, 7 August 2022 Elie talk contribs uploaded File:Primary-Country-and-continent-codes-list-csv csv.csv (Table of countries and their Country Codes (ISO3, M49, etc) and the continents they are on. Source: [https://datahub.io/JohnSnowLabs/country-and-continent-codes-list])
- 04:11, 7 August 2022 Elie talk contribs created page Code:borders-black-on-white.c (Created page with "<syntaxhighlight lang="c"> #define WIDTH 8640 #define HEIGHT 4320 #define IN_FILE "data/countries.data-int16-8640x4320" #define OUT_FILE "data/borders-black-on-white.png" #include <stdio.h> #define STB_IMAGE_WRITE_IMPLEMENTATION #include "stb_image_write.h" int main() { short *in = malloc(WIDTH*HEIGHT*sizeof(short)); unsigned char *out = malloc(WIDTH*HEIGHT*sizeof(unsigned char)); if (!in || !out) { printf("Not enough memory\n"); free(in); free(out);...")
- 04:06, 7 August 2022 Elie talk contribs created page File:Borders-black-on-white.png (World map: Outlines of countries, black on white Projection: equirectangular (geographic) This image was generated by Code:borders-black-on-white.c which uses File:countries.data-int16-8640x4320 (data from NASA) as input.)
- 04:06, 7 August 2022 Elie talk contribs uploaded File:Borders-black-on-white.png (World map: Outlines of countries, black on white Projection: equirectangular (geographic) This image was generated by Code:borders-black-on-white.c which uses File:countries.data-int16-8640x4320 (data from NASA) as input.)
- 03:52, 7 August 2022 Elie talk contribs created page File:Population-earth1.png (An Term:isochromic map of the world population, superimposed on a pastel-color background that shows land, water, and borders. Everything in black is population. Note: Some border lines may be completely obscured by populations (especially India's borders with Bangladesh, Pakistan, and Bhutan). Still better than the opposite (letting the border lines obscure the populations).)
- 03:52, 7 August 2022 Elie talk contribs uploaded File:Population-earth1.png (An Term:isochromic map of the world population, superimposed on a pastel-color background that shows land, water, and borders. Everything in black is population. Note: Some border lines may be completely obscured by populations (especially India's borders with Bangladesh, Pakistan, and Bhutan). Still better than the opposite (letting the border lines obscure the populations).)
- 03:35, 7 August 2022 Elie talk contribs created page File:Primary-Blue Marble 2002.png (NASA's original Blue Marble Map of the Earth from satellite imagery Source: https://visibleearth.nasa.gov/collection/1484/blue-marble)
- 03:35, 7 August 2022 Elie talk contribs uploaded File:Primary-Blue Marble 2002.png (NASA's original Blue Marble Map of the Earth from satellite imagery Source: https://visibleearth.nasa.gov/collection/1484/blue-marble)
- 03:28, 7 August 2022 Elie talk contribs uploaded File:Blue-marble-posterized.png
- 03:26, 7 August 2022 Elie talk contribs created page File:Blue-marble-posterized.png (Created page with "== Summary == Simplified version of NASA's Blue Marble. Yellow areas are generally deserts or harsh mountainous regions. Suggested usage: for superimposing other data in black and/or white. How it was made * Opened the File:primary/Blue_Marble_2002.jpg in mtPaint (image editor) * Applied gamma=150% to blue and green channels (but not red channel) * Applied maximum color saturation, repeatedly * Posterized the image, on the most extreme setting * Replaced red spots...")
- 02:59, 7 August 2022 Elie talk contribs created page File:Solar-land-requirements.png (World map: If all energy came from solar panels, how much land would we need? The land is shown in white. We would need approximately 0.8% of Earth's surface. <small>Just for comparison, crop land is about 2.9% of Earth's surface, and pasture land is about 5.4% of Earth's surface.</small> ==Methodology== Land required for solar panels, if * all energy came from solar photovoltaics, and * everyone on Earth lived a "first-world" lifestyle. Map projection: equirectangular Not counted in...)
- 02:59, 7 August 2022 Elie talk contribs uploaded File:Solar-land-requirements.png (World map: If all energy came from solar panels, how much land would we need? The land is shown in white. We would need approximately 0.8% of Earth's surface. <small>Just for comparison, crop land is about 2.9% of Earth's surface, and pasture land is about 5.4% of Earth's surface.</small> ==Methodology== Land required for solar panels, if * all energy came from solar photovoltaics, and * everyone on Earth lived a "first-world" lifestyle. Map projection: equirectangular Not counted in...)
- 02:57, 7 August 2022 Elie talk contribs created page MediaWiki:Licenses (Created page with "- Creative Commons GNU General Public License")
- 12:15, 5 August 2022 Elie talk contribs created page Code:isochromic.c (Created page with "<syntaxhighlight lang="c"> // Elie's isochromic image generator v0.5 // Copyright 2022, Elie Goldman Smith // License: GNU GPL V3 // To compile this code: // gcc isochromic.c -lm -lfftw3 -lreadline -lcurses -O3 -o isochromic // # takes awhile to compile, because of optimization and stb_image #include <ctype.h> #include <fftw3.h> #include <math.h> #include <signal.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <readline/readline.h> #include <...")
- 12:11, 5 August 2022 Elie talk contribs created page Code:food1.sql (Created page with "<syntaxhighlight lang="sql"> -- This is used in the methodology of various olam.wiki pages -- Copyright Elie Goldman Smith, 2022 (Creative Commons license) -- Run this in SQLite3 ---------------------- -- Load data from various sources .mode csv -- cross-reference: crops (FAO data) with foods (USDA nutrition data): .import fao_usda.csv fao_usda -- nutrition (USDA): .import data/sr28-collated.csv...")
- 17:38, 23 June 2022 Elie talk contribs created page Laundry (Created page with "People like to have clean clothes. But how many resources does it take to uphold the "western" lifestyle of (for example) washing a shirt after wearing it no more than twice? ==Research needed== Things to consider * Soap and water involved * Energy used by the washer * Energy used in manufacturing the washer, divided by the number of washes expected of the lifespan Approaches * Calculate things per wash, or per clothing item washed * Scale it up and see if it matches ot...")
- 17:35, 23 June 2022 Elie talk contribs created page Cars (Created page with "==Research needed== Vehicles to analyze * Electric car(s) * Gasoline-powered car(s) For each vehicle * Life cycle assessment: stages ** production (materials, manufacturing) ** usage (driving, repairs, maintenance) ** disposal (scrapping, recycling, and/or putting in landfill) * For each stage, list resources used: ** Energy ** Materials (start by quantifying each material separately, if possible) ** If data is available: *** Carbon emissions *** Other pollution *** Labo...")
- 17:25, 23 June 2022 Elie talk contribs created page Appliances (Created page with "It's a common ''green initiative'' to replace '''old''' appliances with '''new''' ones that use less energy. But in what cases is this actually beneficial to the environment - and in what cases is it '''worse'''? We have to compare the environmental footprint of making a new appliance vs the energy saved. Reasons we shouldn't assume (by default) that replacement is the better choice: * Globally, Energy#Energy_demand|manufacturing uses far more energy than house...")
- 23:52, 22 June 2022 Elie talk contribs created page Wood (Created page with "/wood Wood is both a material and a fuel. It comes from cutting down trees. ==Research needed== Global production of wood * By source type ** Tree farms *** Yields: how much wood per day per acre? ** Old growth *** How much wood per acre of deforestation? * By product grade ** Lumber ** Firewood ** Pulp/paper ** Sawdust ** Other? What would happen if global production increased? More old-growth forests would be converted to tree farms, I wo...")
- 19:47, 22 June 2022 Elie talk contribs created page Talk:Materials (Created page with "==How to make this work?== What should I (the webmaster) put in place to enable people to easily contribute to the research? I'm trying to set it up in a way that... * anyone can contribute information on any material (glass, steel, etc) * the information fits into the framework I wrote (environmental impacts) Should there be some sort of a workspace? Perhaps a wiki table or two? I'm looking for ideas. ~~~~")
- 19:26, 22 June 2022 Elie talk contribs created page Materials (Created page with "The world depends on materials such as metal, glass, plastic, wood, and so many more. All of these have an environmental impact, and involve some human labor. How do we weigh the benefits of any ''green solution'' against the materials it uses? ==Research needed== For each material, consider * The energy it takes to produce it * The pollution it takes to produce it {{x|If there are less polluting ways, are there tradeoffs such as needing mo...")
- 19:07, 22 June 2022 Elie talk contribs created page Insulation (Created page with "It takes energy to heat & cool buildings. The worse the insulation, the more energy it takes. There are plenty of ways to improve the insulation. But that ''also'' takes energy - as well as labor and materials. We need to compare the environmental impact of ''doing the work'' vs ''doing nothing''. In which cases is it better to renovate, and in which cases is it better to just let it be? ==Research needed== Compare various retrofit scenarios, such as * Replacing o...")
- 01:13, 8 June 2022 Elie talk contribs created page Crop choices (Created page with "One way to increase crop yields is to simply ''grow different crops''. Food production could be ''doubled'' this way (without increasing farm land), although food ''quality'' may suffer a bit. People would have to get used to different foods, but a nutritionally balanced diet is still easily achieveable. ==Best yielding crops for each region== ===Ranked by calories=== {{aip}} ===Ranked by protein=== {{aip}} ===Ranked by calories and protein=== This...")
- 01:00, 8 June 2022 Elie talk contribs created page Template:Aip (quote)
- 04:17, 31 May 2022 Elie talk contribs created page File talk:Energy-demand-status-quo.png (Created blank page)
- 04:16, 31 May 2022 Elie talk contribs created page File talk:Energy-demand-if-developed.png (Created blank page)
- 03:39, 31 May 2022 Elie talk contribs created page File:Energy-demand-if-developed.png (Methodology: see energy demand scenarios.)
- 03:39, 31 May 2022 Elie talk contribs uploaded File:Energy-demand-if-developed.png (Methodology: see energy demand scenarios.)
- 03:37, 31 May 2022 Elie talk contribs created page File:Energy-demand-status-quo.png (Methodology: see energy demand scenarios.)
- 03:37, 31 May 2022 Elie talk contribs uploaded File:Energy-demand-status-quo.png (Methodology: see energy demand scenarios.)
- 00:38, 31 May 2022 Elie talk contribs created page File talk:Energy-usage-by-source.png (Created blank page)
- 00:35, 31 May 2022 Elie talk contribs created page Talk:Methane cracking (Created blank page)
- 00:04, 31 May 2022 Elie talk contribs created page Methane cracking (Created page with "==Energy viability== Every methane-cracking method ''invented so far'' is a ''net loss'' of energy. Meaning that it takes more energy to crack the methane than you ultimately get from burning the hydrogen. But in theory, this need not be true:<br /> : CH4 -> C + 2 H2 (endothermic: 74.850 kJ/mol)<br /> : 2 H2 + O2 -> 2 H2O (exothermic: 285.820 kJ/mol) ===Hydrogen production efficiency levels=== {| class='wikitable' ! Type ! Method ! Energy out / energy in |- |Methane c...")
- 23:35, 30 May 2022 Elie talk contribs created page Template:Qn (Created page with "<sup>Quantification needed</sup>")
- 23:34, 30 May 2022 Elie talk contribs created page Fossil fuels (Created page with "Fossil fuels include coal, oil, and natural gas. They occur naturally in the Earth, and can be burned for energy. They currently provide over 80% of the world's energy, but at a '''heavy environmental cost:''' pollution and climate change. Over 75% of all greenhouse gas emissions are due to burning fossil fuels. ==How much is there== Globally, per person, there is about 31 tonnes of oil (recoverable) somewhere in the Earth. {{ecalc|oil.re...")
- 23:18, 30 May 2022 Elie talk contribs created page Talk:Fossil fuels (Created page with "==Maps worth making== Term:Isochromic world maps: # coal, oil, and natural gas: reserves. superimposed with population. # coal, oil, and natural gas: production. superimposed with population. # coal, oil, and natural gas: consumption. superimposed with population. * Population in black, with a very small pixel spread. * Fossil fuels in overlapping cyan, magenta and yellow (country-level resolution). Some things this would help showcase: * how much oil comes from war...")
- 22:12, 30 May 2022 Elie talk contribs created page Talk:War (Created page with "==Maps worth making== Term:Isochromic world map with population, deaths by war, and deaths by other violence.")
- 21:25, 30 May 2022 Elie talk contribs created page Template:Q (Created page with "<span class='ppv2'><nowiki>[?]</nowiki>|{{{1}}}</span>")
- 20:14, 30 May 2022 Elie talk contribs created page File:Energy-usage-by-source.png (Top bar: Energy used to generate electricity {{p2|mostly|We say this for simplicity sake. Technically, 22% of it is other things (losses, the energy industry's own use, etc). }}. Bottom bar: Total final consumption (TFC) Total energy supply (TES): top bar + bottom bar - electricity)
- 20:14, 30 May 2022 Elie talk contribs uploaded File:Energy-usage-by-source.png (Top bar: Energy used to generate electricity {{p2|mostly|We say this for simplicity sake. Technically, 22% of it is other things (losses, the energy industry's own use, etc). }}. Bottom bar: Total final consumption (TFC) Total energy supply (TES): top bar + bottom bar - electricity)
- 01:34, 29 May 2022 Elie talk contribs created page Talk:Walkability (Created blank page)
- 01:34, 29 May 2022 Elie talk contribs created page Talk:Primitivism (Created blank page)
- 01:33, 29 May 2022 Elie talk contribs created page Talk:Main Page (Created blank page)
- 01:32, 29 May 2022 Elie talk contribs created page Talk:Housing supply analysis (Created blank page)
- 01:32, 29 May 2022 Elie talk contribs created page Talk:Food waste (Created blank page)
- 01:31, 29 May 2022 Elie talk contribs created page Talk:Food (Created blank page)